"uuid","repository link","title","author","contributor","publication year","abstract","subject topic","language","publication type","publisher","isbn","issn","patent","patent status","bibliographic note","access restriction","embargo date","faculty","department","research group","programme","project","coordinates"
"uuid:a6969f0a-c0b9-43f3-baec-4f40b4fa8a19","http://resolver.tudelft.nl/uuid:a6969f0a-c0b9-43f3-baec-4f40b4fa8a19","Mitigation of Channel Bed Erosion through Floodplain Lowering and Nourishments","Ylla Arbos, C. (TU Delft Rivers, Ports, Waterways and Dredging Engineering); Schielen, R.M.J. (TU Delft Rivers, Ports, Waterways and Dredging Engineering; Rijkswaterstaat); van Vuren, Saskia (Rijkswaterstaat); Snoek, Yvo (Rijkswaterstaat); Blom, A. (TU Delft Rivers, Ports, Waterways and Dredging Engineering)","","2024","Channel adjustment in engineered rivers is often associated with channel bed incision (e.g., Chowdhury et al., 2023, Czapiga et al., 2022a, 2022b, Ylla Arbós et al., 2021). Channel bed incision reduces the stability of in-river structures, exposes river-crossing cables and pipelines, and the spatial variability of channel bed incision due to less erodible reaches creates shipping bottlenecks.
Various measures have been implemented to cope with these issues. They range from sediment nourishments to erosion control structures (e.g., Habersack and Piégay, 2007). Our objective is to assess the potential of floodplain lowering and sediment nourishments in mitigating large-scale channel bed incision in engineered rivers affected by climate change, considering a spatial scale of hundreds of kilometres. Our domain of interest is the Rhine River between Bonn, Germany, to Gorinchem, Netherlands. This reach has been extensively channelized during the 18th-20th centuries for improved navigation and flood protection (e.g., Ylla Arbós et al., 2021).","channel bed erosion; erosion mitigation; nourishments; numerical modelling","en","abstract","","","","","","","","","","","Rivers, Ports, Waterways and Dredging Engineering","","",""
"uuid:59b02ec9-5c03-4b86-b8b8-9e886a7a4e2c","http://resolver.tudelft.nl/uuid:59b02ec9-5c03-4b86-b8b8-9e886a7a4e2c","2D and 3D Modelling Strategies to Reproduce the Response of Historical Masonry Buildings Subjected to Settlements","Prosperi, A. (TU Delft Applied Mechanics); Longo, M. (TU Delft Applied Mechanics); Korswagen, Paul A. (TU Delft Applied Mechanics); Korff, M. (TU Delft Geo-engineering); Rots, J.G. (TU Delft Applied Mechanics)","","2024","In this study, 2D and 3D modelling strategies are used to represent the behaviour of historical masonry buildings on strip foundations undergoing settlements. The application focuses on a two-story building, typical of the Dutch architectural heritage. An improved 2D modelling is presented: It includes the effect of the lateral walls to replicate the response of the detailed 3D models. The masonry strip foundation is modelled and supported by a no-tension interface, which represents the soil-foundation interaction. Two settlement configurations, hogging and sagging, are applied to the models, and their intensity is characterized using their angular distortion. The improved 2D model that includes the stiffness and weight of the lateral walls agrees in terms of displacements, stress and damage with the detailed 3D models. Conversely, the simplified 2D façade models without lateral walls exhibit different cracking, and damage from 2 to 7 times lower at an applied angular distortion of 2‰ (1/500). The improved 2D model requires less computational and modelling burden, resulting in analyses from 9 to 40 times faster than the 3D models. The results prove the importance of identifying and including the 3D effects that affect the response of structures subjected to settlements.","damage; masonry structures; numerical modelling; settlements","en","journal article","","","","","","","","","","","Applied Mechanics","","",""
"uuid:31dfdabd-b56b-4c07-89c4-ac1addcba9c6","http://resolver.tudelft.nl/uuid:31dfdabd-b56b-4c07-89c4-ac1addcba9c6","Experimental and Numerical Assessment of an Improved Plywood-Based In-Plane Retrofitting Method for Timber Floors in Highly Seismic Areas","Mirra, M. (TU Delft Bio-based Structures & Materials); Gerardini, A. (Gerardini Ingegneria Sismica)","Papadrakakis, M. (editor); Fragiadakis, M. (editor)","2023","Wood-based retrofitting techniques for seismic upgrading and architectural conservation of existing buildings have found increasing application in the last decades. With reference to the in-plane seismic strengthening of existing timber floors, a particularly efficient solution consists of an overlay of plywood panels fastened to the sheathing. This technique allows a great improvement in strength, stiffness, and energy dissipation of the floors. Yet, when adopting this strengthening solution for existing floors in highly seismic regions, the target design loads could require large values of in-plane strength and stiffness for the retrofitted diaphragms, and this could cause their beneficial, dissipative potential to be reduced. Thus, in this work, a strengthening solution is presented, able to retrieve high strength and at the same time activate large energy dissipation in the floors. The proposed technique consists of the creation of two independent shear planes by means of two different superimposed overlays of plywood panels. Previously developed analytical and numerical models describing the in-plane response of floors retrofitted with a single plywood overlay were adapted for the present case with two overlays, validating the results against an experimental test conducted on a sample representing a floor portion. Very good agreement was obtained between experimental and analytical as well as numerical results, thus the proposed approaches enable an efficient design process and an accurate simulation of the proposed retrofitting technique.","timber floors; plywood panels; seismic retrofitting; existing buildings; numerical modelling","en","conference paper","ECCOMAS","","","","","","","","","","Bio-based Structures & Materials","","",""
"uuid:9ccb6ba2-8472-4dee-95e4-58127d44689c","http://resolver.tudelft.nl/uuid:9ccb6ba2-8472-4dee-95e4-58127d44689c","Assessing Indoor Air Quality and ventilation to limit the spread of airborne pathogens – a review","Hobeika, N. (TU Delft Urban Data Science); Garcia Sanchez, C. (TU Delft Urban Data Science); Bluyssen, P.M. (TU Delft Environmental & Climate Design)","","2023","The corona pandemic underlined a lack of Indoor Air Quality (IAQ) and
ventilation. Consequently, to limit the spread of the virus, researchers explored several indicators that, through different approaches, assess IAQ and ventilation performance in indoor spaces. This paper gives an overview of those indicators and assessment methods used to evaluate IAQ and ventilation regimes focusing specifically on airborne pathogens. This review considers studies from before and during the COVID-19 pandemic. The indicators found fit into three categories: dose, building, and occupant-related indicators. Studies exploring assessment methods found in this review are grouped according to their themes: aerosol dispersion, ventilation, infection risk, design parameters, and human behaviour. The review showed a need for a holistic definition for IAQ indicators that includes all indicators and a holistic approach of studying IAQ including all five themes.","indoor air quality; aerosol dispersion; ventilation; numerical modelling; computational fluid dynamics; assessment","en","abstract","","","","","","","","","","","Urban Data Science","","",""
"uuid:79f6f0ef-debb-4318-a94e-c46e77d48783","http://resolver.tudelft.nl/uuid:79f6f0ef-debb-4318-a94e-c46e77d48783","Non-Hydrostatic Modelling of Coastal Flooding in Port Environments","Suzuki, T. (TU Delft Environmental Fluid Mechanics; Flanders Hydraulics Research); Altomare, Corrado (Universitat Politecnica de Catalunya); Willems, Marc (Flanders Hydraulics Research); Dan, Sebastian (Flanders Hydraulics Research)","","2023","Understanding key flooding processes such as wave overtopping and overflow (i.e., water flows over a structure when the crest level of the structure is lower than the water level in front) is crucial for coastal management and coastal safety assessment. In port and harbour environments, waves are not only perpendicular to the coastal structure but also very oblique, with wavefronts almost perpendicular to the main infrastructures in the harbour docks. Propagation and wave–structure interaction of such perpendicular and (very) oblique waves need to be appropriately modelled to estimate wave overtopping properly. Overflow can also be critical for estimating flooding behind any coastal defence. In this study, such oblique and parallel waves (i.e., main wave direction is parallel to the structures) are modelled in a non-hydrostatic wave model and validated with physical model tests in the literature. On top, overflow is also modelled and validated using an existing empirical formula. The model gives convincing behaviours on the wave overtopping and overflow.","non-hydrostatic model; numerical modelling; oblique waves; overflow; port; SWASH; wave overtopping","en","journal article","","","","","","","","","","","Environmental Fluid Mechanics","","",""
"uuid:13ec99b7-bef0-4a24-b26a-b1a9cae00ab6","http://resolver.tudelft.nl/uuid:13ec99b7-bef0-4a24-b26a-b1a9cae00ab6","Relating cone penetration resistance to sand state using the material point method","Martinelli, M. (TU Delft Dynamics of Structures; Deltares); Pisano, F. (TU Delft Geo-engineering)","","2022","Cone penetration tests (CPTs) can quantitatively inform about the mechanical state of a sand. However, relating measured cone resistance values to sand state requires complex back-analysis of the processes occurring in the soil during the test. This paper provides new evidence of the value added in this area by modern large-deformation modelling based on the material point method (MPM). It is shown that accurate simulation of the relationship between cone resistance and sand state can be achieved, on condition that the constitutive behaviour of the soil - and especially its critical state features - is adequately modelled over a wide range of confining pressures. This study relies on the predictive capabilities of the critical state NorSand model, and shows how previous calibrations endeavours from the literature (based on triaxial test results) can support the MPM simulation of unrelated CPT results obtained through calibration chamber tests. MPM CPT simulations of ever-increasing quality will positively impact the state of the art of CPT interpretation procedures, to date still largely based on simplified cavity expansion theories.","Sand; in situ testing; numerical modelling; constitutive relations; geomaterial characterisation","en","journal article","","","","","","Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2023-07-01","","","Dynamics of Structures","","",""
"uuid:6501e113-6e58-4e62-908a-d4abdde56576","http://resolver.tudelft.nl/uuid:6501e113-6e58-4e62-908a-d4abdde56576","Achieving 23.83% conversion efficiency in silicon heterojunction solar cell with ultra-thin MoOx hole collector layer via tailoring (i)a-Si:H/MoOx interface","Cao, L. (TU Delft Photovoltaic Materials and Devices); Procel Moya, P.A. (TU Delft Photovoltaic Materials and Devices; Universidad San Francisco de Quito); Alcañiz Moya, A. (TU Delft Photovoltaic Materials and Devices); Yan, J. (TU Delft Photovoltaic Materials and Devices); Tichelaar, F.D. (TU Delft QN/Afdelingsbureau; Kavli institute of nanoscience Delft); Özkol, E. (TU Delft Photovoltaic Materials and Devices); Zhao, Y. (TU Delft Photovoltaic Materials and Devices); Han, C. (TU Delft Photovoltaic Materials and Devices); Yang, G. (TU Delft Photovoltaic Materials and Devices); Yao, Z. (TU Delft Photovoltaic Materials and Devices); Zeman, M. (TU Delft Electrical Sustainable Energy); Santbergen, R. (TU Delft Photovoltaic Materials and Devices); Mazzarella, L. (TU Delft Photovoltaic Materials and Devices); Isabella, O. (TU Delft Photovoltaic Materials and Devices)","","2022","Thin films of transition metal oxides such as molybdenum oxide (MoOx) are attractive for application in silicon heterojunction solar cells for their potential to yield large short-circuit current density. However, full control of electrical properties of thin MoOx layers must be mastered to obtain an efficient hole collector. Here, we show that the key to control the MoOx layer quality is the interface between the MoOx and the hydrogenated intrinsic amorphous silicon passivation layer underneath. By means of ab initio modelling, we demonstrate a dipole at such interface and study its minimization in terms of work function variation to enable high performance hole transport. We apply this knowledge to experimentally tailor the oxygen content in MoOx by plasma treatments (PTs). PTs act as a barrier to oxygen diffusion/reaction and result in optimal electrical properties of the MoOx hole collector. With this approach, we can thin down the MoOx thickness to 1.7 nm and demonstrate short-circuit current density well above 40 mA/cm2 and a champion device exhibiting 23.83% conversion efficiency.","dipole; fundamental study; industrial approach; numerical modelling; plasma treatment; silicon heterojunction solar cells; tailoring MoO; ultra-thin MoO","en","journal article","","","","","","","","","","Electrical Sustainable Energy","Photovoltaic Materials and Devices","","",""
"uuid:6107f767-0ecd-48dd-a4e7-ad45a7851deb","http://resolver.tudelft.nl/uuid:6107f767-0ecd-48dd-a4e7-ad45a7851deb","Modelling compressive behaviour of cement paste with superabsorbent polymer","Zhao, Shengying (Harbin Institute of Technology, China); Guan, Xinchun (Harbin Institute of Technology, China); Qiao, Guofu (Harbin Institute of Technology, China)","","2021","Superabsorbent polymer (SAP) can modify the microstructure and influence the mechanical properties of cement paste in at least two ways: while cavities left by SAP increase the total porosity, water released by SAP affects the hydration degree of the surrounding paste. As a starting point for investigation into the overall effect, this study presents a numerical model comprised of spherical voids, affected zones, and the unaffected matrix. In comparison, a binary model consisting only of the voids and the unaffected matrix is built up. Compressive loads are applied to both paste models. The results show that in either model a considerable negative normal stress (compressive) is typical in the middle part of SAP pore walls. The void-surrounding area subject to positive normal stress seems to be larger in the SAP-containing paste than in the other one. Nevertheless, there is a 10% reduction in maximum principal stress caused by the tougher affected zone.","mechanical behaviour; cement paste; superabsorbent polymers; numerical modelling","en","conference paper","","","","","","","","","","","","","",""
"uuid:64559f52-6ae2-4a54-aaf5-b0ac81e750fb","http://resolver.tudelft.nl/uuid:64559f52-6ae2-4a54-aaf5-b0ac81e750fb","Efficient long-term one-dimensional morphodynamic modelling in alluvial rivers using simplified models – theory and validation","Barneveld, Hermjan (Wageningen University & Research; HKV Consultant); Hoitink, Ton (Wageningen University & Research); Mosselman, E. (TU Delft Rivers, Ports, Waterways and Dredging Engineering; Deltares); Chavarrias, V. (Deltares)","","2021","","river morphology; numerical modelling; analytical approach","en","abstract","","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2021-08-12","","","Rivers, Ports, Waterways and Dredging Engineering","","",""
"uuid:aa6c207f-1731-42dc-bca1-ce2516fce7af","http://resolver.tudelft.nl/uuid:aa6c207f-1731-42dc-bca1-ce2516fce7af","Numerical and small-scale physical modelling of wave transmission by wooden fences","Dào, H.T. (TU Delft Coastal Engineering); Hofland, Bas (TU Delft Hydraulic Structures and Flood Risk); Suzuki, Tomohiro (Flanders Hydraulics Research); Stive, M.J.F. (TU Delft Coastal Engineering); Mai, Tri (National University of Civil Engineering); Tuan, Le Xuan (Vietnam National University)","","2021","Mangrove forests, that often act as natural coastal defences, enormously suffered due to ongoing climate change and human disturbances. Thus, it is necessary to have a countermeasure to mitigate the loss of mangroves. Wooden fences are becoming a viable nature-based solution to protect vulnerable replanted mangrove forests. However, the wooden fence's hydraulic characteristics are not yet fully understood due to the complication of branches arrangement. In the present study, a small-scale wave flume modelling of wave damping by a wooden fence was constructed using the inner branches as an inhomogeneous arrangement tested in earlier flow-resistance experiments. The physical model results indicate that the wooden fence is highly effective on wave transmission and that the effectiveness in wave reduction depends on the relative fence thickness, B/Hi. To understand the scale effect on wave transmission further, the numerical model SWASH was used with the laboratory wave data. By applying the prior experiments' drag coefficient on steady flow, the uncalibrated numerical model gave a good agreement with the wave model results, with a root-mean-square error for the total transmitted wave heights of 4.7%. After validation, potential scale effects for small scale tests were determined from scaling simulations at both full scales and the applied 1:5 model scale. These simulations were performed for a fence porosity of 0.81, and different fence thicknesses to understand scale effects between model- and full-scale. Both wave reflection and transmission at model-scale are about 5% higher than full-scale results due to the increased drag coefficient and viscous effects. The effects of fence thickness and porosity were the same in large and small scale, and much larger than the error due to scale effects. Hence testing fence efficiency at physical small scale is regarded as a useful tool, together with numerical modelling.","Nature-based solution; Mekong Delta; Physical modelling; SWASH; numerical modelling; wave damping; Brushwood fence","en","journal article","","","","","","","","","","","Coastal Engineering","","",""
"uuid:5d4e0db3-c50c-4f33-b261-c3ec7514139e","http://resolver.tudelft.nl/uuid:5d4e0db3-c50c-4f33-b261-c3ec7514139e","On the modelling of the unstable breaching process","Weij, D. (TU Delft Offshore and Dredging Engineering)","van Rhee, C. (promotor); Keetels, G.H. (copromotor); Delft University of Technology (degree granting institution)","2020","Breaching is an important production mechanism for stationary suction dredgers. It is a process occurring in submerged sandy slopes, which mostly occurs in dense sandy soils with a low permeability. The process is initiated by the formation of a slope under water, whose angle is steeper than the internal friction angle, called the breach face. For dredging related breaching, this steep slope is created by a suction dredger, but it can also be formed after initial shear failure, caused by over steepening due to erosion, an earthquake, or an outwardly directed water flow. During breaching process, this steep slope is semi-stable due to negative pore pressure. Instead of a shear failure, particles are released one by one from the breach face, making it seem like the breach face is slowly moving backwards. The released particles form a density current that flows away from the breach face, and can be collected by a stationary suction dredger. When the size of the breach face increases over time, we have an unstable breach.","Dredging; numerical modelling; turbidity currents; breaching","en","doctoral thesis","","","","","","","","","","","Offshore and Dredging Engineering","","",""
"uuid:aee5b42a-8809-42aa-bb76-68f4fcb92c90","http://resolver.tudelft.nl/uuid:aee5b42a-8809-42aa-bb76-68f4fcb92c90","Modelling of landslides in a scree slope induced by groundwater and rainfall","Lucas, Daisy (ETH Zürich); Herzog, Ralf (ETH Zürich); Iten, Markus (ETH Zürich); Buschor, Heinz (ETH Zürich); Kieper, Andreas (ETH Zürich); Askarinejad, A. (TU Delft Geo-engineering); Springman, Sarah M. (ETH Zürich)","","2020","Predicting the trigger of a slope failure of a steep Alpine scree slope in south-west Switzerland is challenging. The groundwater (GW) flow from snow-melting and rainfall infiltration during summer changes the susceptibility to surficial failure, which also depends on the slope angle, bedrock geometry, stratigraphy and the shear strength of the soil. Surficial failure mechanisms are investigated using prototype ground models that integrate input from field monitoring, geological observations and soil properties and account for relevant factors and constraints for physical and numerical modelling. Shallow scree deposits overlying various bedrock configurations (parallel to the slope, with and without a step) were tested under two hydrological regimes: GW flow, and GW combined with additional intense rainfall. Numerical modelling was used to study the parameter combinations that would lead to failure, and worst-case scenarios were defined in terms of the bedrock geometry and hydraulic perturbations. These results were verified using advanced physical modelling techniques in a geotechnical drum centrifuge. Physical modelling results indicated that, for a given GW condition, slope stability decreases (a) as the depth of the soil cover over the bedrock decreases and (b) the higher the bedrock step. Furthermore, a bedrock step impacts the volume and the location of the triggered failure. Rainfall exacerbates the situation.","centrifuge modelling; landslides; numerical modelling","en","journal article","","","","","","","","","","","Geo-engineering","","",""
"uuid:866d60c3-d382-47ce-9f5d-a5432e517623","http://resolver.tudelft.nl/uuid:866d60c3-d382-47ce-9f5d-a5432e517623","On characteristic values for calculating factors of safety for dyke stability","Varkey, D. (TU Delft Geo-engineering); Hicks, M.A. (TU Delft Geo-engineering); van den Eijnden, A.P. (TU Delft Geo-engineering); Vardon, P.J. (TU Delft Geo-engineering)","","2020","Various simplified approaches are used to calculate the characteristic values of shear strength properties, which have then been used in deterministic stability analyses of a dyke cross-section. The calculated factors of safety are compared with the 5-percentile ‘system response’ of the dyke cross-section, calculated using the more exhaustive random finite-element method (RFEM), which is consistent with the requirements of Eurocode 7. The simplified methods accounting for variance reduction due to averaging of property values mostly give factors of safety within 10% of the RFEM solution, whereas the factor of safety based on the 5-percentile material properties is significantly over-conservative.","numerical modelling; slopes; statistical analysis","en","journal article","","","","","","Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.","","2020-12-30","","","Geo-engineering","","",""
"uuid:2506bbc7-ef18-4ac4-82f2-4311b5f3fcf5","http://resolver.tudelft.nl/uuid:2506bbc7-ef18-4ac4-82f2-4311b5f3fcf5","PISA design model for monopiles for offshore wind turbines: Application to a stiff glacial clay till","Byrne, Byron W. (University of Oxford); Houlsby, Guy T. (University of Oxford); Burd, Harvey J. (University of Oxford); Gavin, Kenneth (TU Delft Geo-engineering); Igoe, David J.P. (Trinity College Dublin); Jardine, Richard J. (Imperial College London); Martin, Christopher M. (University of Oxford); McAdam, Ross A. (University of Oxford); Potts, David M. (Imperial College London)","","2020","Offshore wind turbines in shallow coastal waters are typically supported on monopile foundations. Although three-dimensional (3D) finite-element methods are available for the design of monopiles in this context, much of the routine design work is currently conducted using simplified one-dimensional (1D) models based on the p-y method. The p-y method was originally developed for the relatively large embedded length-to-diameter ratio (L/D) piles that are typically employed in offshore oil and gas structures. Concerns exist, however, that this analysis approach may not be appropriate for monopiles with the relatively low values of L/D that are typically adopted for offshore wind turbine structures. This paper describes a new 1D design model for monopile foundations; the model is specifically formulated for offshore wind turbine applications, although the general approach could be adopted for other applications. The model draws on the conventional p-y approach, but extends it to include additional components of soil reaction that act on the pile. The 1D model is calibrated using a set of bespoke 3D finite-element analyses of monopile performance, for pile characteristics and loading conditions that span a predefined design space. The calibrated 1D model provides results that match those obtained from the 3D finite-element calibration analysis, but at a fraction of the computational cost. Moreover, within the calibration space, the 1D model is capable of delivering high-fidelity computations of monopile performance that can be used directly for design purposes. This 1D modelling approach is demonstrated for monopiles installed in a stiff, overconsolidated glacial clay till with a typical North Sea strength and stiffness profile. Although the current form of the model has been developed for homogeneous soil and monotonic loading, it forms a basis from which extensions for soil layering and cyclic loading can be developed. The general approach can be applied to other foundation and soil-structure interaction problems, in which bespoke calibration of a simplified model can lead to more efficient design.","design; limit state design/analysis; numerical modelling; offshore engineering; piles & piling; soil/structure interaction","en","journal article","","","","","","","","","","","Geo-engineering","","",""
"uuid:15ada30a-1cf4-43ab-91f4-afb0916b587e","http://resolver.tudelft.nl/uuid:15ada30a-1cf4-43ab-91f4-afb0916b587e","Finite-element modelling of laterally loaded piles in a dense marine sand at Dunkirk","Taborda, David M.G. (Imperial College London); Zdravkovic, Lidija (Imperial College London); Potts, David M. (Imperial College London); Burd, Harvey J. (University of Oxford); Byrne, Byron W. (University of Oxford); Gavin, Kenneth (TU Delft Geo-engineering); Houlsby, Guy T. (University of Oxford); Jardine, Richard J. (Imperial College London); Liu, Tingfa (Imperial College London)","","2020","The paper presents the development of a three-dimensional finite-element model for pile tests in dense Dunkirk sand, conducted as part of the PISA project. The project was aimed at developing improved design methods for laterally loaded piles, as used in offshore wind turbine foundations. The importance of the consistent and integrated interpretation of the soil data from laboratory and field investigations is particularly emphasised. The chosen constitutive model for sand is an enhanced version of the state parameter-based bounding surface plasticity model, which, crucially, is able to reproduce the dependency of sand behaviour on void ratio and stress level. The predictions from three-dimensional finite-element analyses, performed before the field tests, show good agreement with the measured behaviour, proving the adequacy of the developed numerical model and the calibration process for the constitutive model. This numerical model directly facilitated the development of new soil reaction curves for use in Winkler-type design models for laterally loaded piles in natural marine sands.","constitutive relations; design; finite-element modelling; numerical modelling; piles AND piling; soil/structure interaction","en","journal article","","","","","","","","","","","Geo-engineering","","",""
"uuid:f729422c-22ee-4554-a6da-8e125de09338","http://resolver.tudelft.nl/uuid:f729422c-22ee-4554-a6da-8e125de09338","PISA design model for monopiles for offshore wind turbines: Application to a marine sand","Burd, Harvey J. (University of Oxford); Taborda, David M.G. (Imperial College London); Zdravkovic, Lidija (Imperial College London); Abadie, Christelle N. (University of Cambridge); Byrne, Byron W. (University of Oxford); Houlsby, Guy T. (University of Oxford); Gavin, Kenneth (TU Delft Geo-engineering); Igoe, David J.P. (Trinity College Dublin); Jardine, Richard J. (Imperial College London)","","2020","This paper describes a one-dimensional (1D) computational model for the analysis and design of laterally loaded monopile foundations for offshore wind turbine applications. The model represents the monopile as an embedded beam and specially formulated functions, referred to as soil reaction curves, are employed to represent the various components of soil reaction that are assumed to act on the pile. This design model was an outcome of a recently completed joint industry research project - known as PISA - on the development of new procedures for the design of monopile foundations for offshore wind applications. The overall framework of the model, and an application to a stiff glacial clay till soil, is described in a companion paper by Byrne and co-workers; the current paper describes an alternative formulation that has been developed for soil reaction curves that are applicable to monopiles installed at offshore homogeneous sand sites, for drained loading. The 1D model is calibrated using data from a set of three-dimensional finite-element analyses, conducted over a calibration space comprising pile geometries, loading configurations and soil relative densities that span typical design values. The performance of the model is demonstrated by the analysis of example design cases. The current form of the model is applicable to homogeneous soil and monotonic loading, although extensions to soil layering and cyclic loading are possible.","design; limit state design/analysis; numerical modelling; offshore engineering; piles AND piling; soil/structure interaction","en","journal article","","","","","","","","","","","Geo-engineering","","",""
"uuid:68b47b23-50d9-4b38-9e8b-40b791958492","http://resolver.tudelft.nl/uuid:68b47b23-50d9-4b38-9e8b-40b791958492","Modelling the cyclic ratcheting of sands through memory-enhanced bounding surface plasticity","Liu, H. (TU Delft Geo-engineering); Abell, J. A. (Universidad de los Andes); Diambra, A. (University of Bristol); Pisano, F. (TU Delft Geo-engineering)","","2019","The modelling and simulation of cyclic sand ratcheting is tackled by means of a plasticity model formulated within the well-known critical state, bounding surface SANISAND framework. For this purpose, a third locus – termed the ‘memory surface’ – is cast into the constitutive formulation, so as to phenomenologically capture micro-mechanical, fabric-related processes directly relevant to the cyclic response. The predictive capability of the model under numerous loading cycles (‘high-cyclic’ loading) is explored with focus on drained loading conditions, and validated against experimental test results from the literature – including triaxial, simple shear and cyclic loading by oedometer test. The model proves capable of reproducing the transition from ratcheting to shakedown response, in combination with a single set of soil parameters for different initial, boundary and loading conditions. This work contributes to the analysis of soil–structure interaction under high-cyclic loading events, such as those induced by environmental and/or traffic loads.","constitutive relations; numerical modelling; offshore engineering; plasticity; sands; stiffness","en","journal article","","","","","","Accepted Author Manuscript","","2019-10-10","","","Geo-engineering","","",""
"uuid:4b42fa39-cb8b-417c-bf93-7964a662f27b","http://resolver.tudelft.nl/uuid:4b42fa39-cb8b-417c-bf93-7964a662f27b","Exploring Thin Glass Strength Test Methodologies","Oliveira Santos, Francisco (University of Lisbon); Louter, P.C. (TU Delft OLD Structural Design); Ramôa Correia, João (University of Lisbon)","Louter, Christian (editor); Bos, Freek (editor); Belis, Jan (editor); Veer, Fred (editor); Nijsse, Rob (editor)","2018","Thin glass is currently widespread in mobile devices and has great potential for applications in buildings. However, presently there is no standard method to determine the strength of thin glass for building applications and there is little experimental data available on its mechanical behaviour. Hence, this paper presents experimental and numerical investigations developed with two main goals: (i) to assess and (eventually) adapt existing test setups in order to determine the strength of thin glass; and (ii) to characterize thin glass using those tests, focusing on the ultimate strength of the material. The experimental programme, which was executed at TU Delft, comprised destructive tests on chemically tempered thin glass (thickness of 2 mm). Two destructive tests were assessed and tentatively improved: the in-plane four-point bending test, which involved many difficulties related with geometrical and mechanical instabilities; and the buckling test, which provided a lower bound for the material strength, as failure was triggered in the supports (due to stress concentrations). Based on the results obtained, a new tension test was proposed and numerically investigated; the results obtained revealed many advantages over the former tests in terms of quality/consistency of results and possibility of standardization.","thin glass; strength; material characterization; destructive testing; numerical modelling","en","conference paper","TU Delft OPEN Publishing","","","","","","","","","","OLD Structural Design","","",""
"uuid:a9270171-6bc3-40e8-8a27-80092380da9f","http://resolver.tudelft.nl/uuid:a9270171-6bc3-40e8-8a27-80092380da9f","An axisymmetric non-hydrostatic model for double-diffusive water systems","Hilgersom, K.P. (TU Delft Water Resources); Zijlema, Marcel (TU Delft Environmental Fluid Mechanics); van de Giesen, N.C. (TU Delft Water Resources)","","2018","The three-dimensional (3-D) modelling of water systems involving double-diffusive processes is challenging due to the large computation times required to solve the flow and transport of constituents. In 3-D systems that approach axisymmetry around a central location, computation times can be reduced by applying a 2-D axisymmetric model set-up. This article applies the Reynolds-averaged Navier–Stokes equations described in cylindrical coordinates and integrates them to guarantee mass and momentum conservation. The discretized equations are presented in a way that a Cartesian finite-volume model can be easily extended to the developed framework, which is demonstrated by the implementation into a non-hydrostatic free-surface flow model. This model employs temperature- and salinity-dependent densities, molecular diffusivities, and kinematic viscosity. One quantitative case study, based on an analytical solution derived for the radial expansion of a dense water layer, and two qualitative case studies demonstrate a good behaviour of the model for seepage inflows with contrasting salinities and temperatures. Four case studies with respect to double-diffusive processes in a stratified water body demonstrate that turbulent flows are not yet correctly modelled near the interfaces and that an advanced turbulence model is required.","axisymmetric model; CFD modelling; density-driven flow; double diffusion; double-diffusive convection; heat transport; non-hydrostatic model; numerical modelling; salt transport; salt-fingers; SWASH (Simulating WAves till SHore)","en","journal article","","","","","","","","","","","Water Resources","","",""
"uuid:81bc9d74-c2b6-48a7-a63d-ab6d8538587a","http://resolver.tudelft.nl/uuid:81bc9d74-c2b6-48a7-a63d-ab6d8538587a","Modelling in applied hydraulics: More accurate in decision making than in science? (PPT)","Mosselman, E. (TU Delft Rivers, Ports, Waterways and Dredging Engineering; Deltares)","","2017","Marked differences occur between modelling in scientific hydraulic research, in hydraulic engineering and in public decision making. This study reviews ifferences in the required accuracy of model results and differences in the choice between physical and numerical modelling. Physical models are used for studying elementary processes and their interactions under controlled conditions in scientific research; for the planning and design of interventions in hydraulic engineering; and for explanation and demonstration in public decision making. Numerical models are powerful tools in scientific research, butfield applications cannot be verified or validated according to rigorous scientific standards. Hydraulic engineers use numerical models for various purposes, some requiring a high accuracy and some not. They are used to uncertainty and deal with this by means of sensitivity analyses or probabilistic approaches. Numerical models are also used for decision making on interventions that affect stakeholders, sometimes even having the last word in corresponding protocols or legislation. The suggested or perceived accuracy of model results is in this context much higher than the real accuracy. This leads to the paradoxical situation that decision makers and stakeholders put higher demands on accuracy than scientists do.","Physical modelling; numerical modelling; validation; design flood levels","en","other","","","","","","Power Point Presentation","","","","","Rivers, Ports, Waterways and Dredging Engineering","","",""
"uuid:38f0e80e-d410-43fb-b7ef-c501485502a8","http://resolver.tudelft.nl/uuid:38f0e80e-d410-43fb-b7ef-c501485502a8","Modelling in applied hydraulics: More accurate in decision making than in science?","Mosselman, E. (TU Delft Rivers, Ports, Waterways and Dredging Engineering; Deltares)","","2017","Marked differences occur between modelling in scientific hydraulic research, in hydraulic engineering and in public decision making. This study reviews ifferences in the required accuracy of model results and differences in the choice between physical and numerical modelling. Physical models are used for studying elementary processes and their interactions under controlled conditions in scientific research; for the planning and design of interventions in hydraulic engineering; and for explanation and demonstration in public decision making. Numerical models are powerful tools in scientific research, butfield applications cannot be verified or validated according to rigorous scientific standards. Hydraulic engineers use numerical models for various purposes, some requiring a high accuracy and some not. They are used to uncertainty and deal with this by means of sensitivity analyses or probabilistic approaches. Numerical models are also used for decision making on interventions that affect stakeholders, sometimes even having the last word in corresponding protocols or legislation. The suggested or perceived accuracy of model results is in this context much higher than the real accuracy. This leads to the paradoxical situation that decision makers and stakeholders put higher demands on accuracy than scientists do.","Physical modelling; numerical modelling; validation; design flood levels","en","abstract","","","","","","","","","","","Rivers, Ports, Waterways and Dredging Engineering","","",""
"uuid:51ee1355-eca1-46b1-8ec7-1164689e4593","http://resolver.tudelft.nl/uuid:51ee1355-eca1-46b1-8ec7-1164689e4593","How tides and waves enhance aeolian sediment transport at the sand motor mega-nourishment","Hoonhout, B.M. (TU Delft Coastal Engineering; Deltares); Luijendijk, Arjen (TU Delft Coastal Engineering; Deltares); Velhorst, R.L.C.; de Vries, S. (TU Delft Coastal Engineering); Roelvink, D. (IHE Delft Institute for Water Education)","Aagaard, T. (editor); Deigaard, R. (editor); Fuhrman, D. (editor)","2017","Expanding knowledge concerning the close entanglement between subtidal and subaerial processes in coastal environments initiated the development of the open-source Windsurf modeling framework that enables us to simulate
multi-fraction sediment transport due to subtidal and subaerial processes simultaneously. The Windsurf framework couples separate model cores for subtidal morphodynamics related to waves and currents and storms and aeolian
sediment transport. The Windsurf framework bridges three gaps in our ability to model long-term coastal morphodynamics: differences in time scales, land/water boundary and differences in meshes.
The Windsurf framework is applied to the Sand Motor mega-nourishment. The Sand Motor is virtually permanentlyexposed to tides, waves and wind and is consequently highly dynamic. In order to understand the complex
morphological behavior of the Sand Motor, it is vital to take both subtidal and subaerial processes into account. The ultimate aim of this study is to identify governing processes in aeolian sediment transport estimates in coastal environments and improve the accuracy of long-term coastal morphodynamic modeling.
At the Sand Motor beach armoring occurs on the dry beach. In contrast to the dry beach, no armor layer can be established in the intertidal zone due to periodic flooding. Consequently, during low tide non-armored intertidal beaches are susceptible for wind erosion and, although moist, may provide a larger aeolian sediment supply than the vast dry beach areas. Hence, subtidal processes significantly influence the subaerial morphology and both need to be accounted for to understand the long-term aeolian morphodynamic behavior of the Sand Motor.","hydrodynamics; sediment transport; morphodynamics; dunes and ecomorphology; numerical modelling; coasts and climate","en","conference paper","","","","","","","","","","","Coastal Engineering","","",""
"uuid:e964293a-f6e9-4ae1-ba51-a550e9ad3cc0","http://resolver.tudelft.nl/uuid:e964293a-f6e9-4ae1-ba51-a550e9ad3cc0","Response in the mekong deltaic coast to its changing sediment sources and sinks","Phan, M.H. (TU Delft Coastal Engineering; Vietnam Minsitry of Agriculture and Rural Development); Reniers, A.J.H.M. (TU Delft Environmental Fluid Mechanics); Ye, Qinghua (Deltares); Stive, M.J.F. (TU Delft Coastal Engineering)","Aagaard, T. (editor); Deigaard, R. (editor); Fuhrman, D. (editor)","2017","The coastal zone of Mekong delta is suffering under intense pressures from climate change as well as human intervention. Currently, the coastline evolution of Mekong delta is a complex combination of impacts due to (1) relative sea level rise i.e. the sum of eustatic sea level rise, natural and human induced subsidence (2) sediment transport rate changes at some sections due to change of wave condition by climate change (3) change of sediment sources from the Mekong estuaries by dam construction and sand mining and (4) mangrove degradation. A coastline monitoring is the basis to understand and manage coast. This study utilizes integrated techniques of remote sensing, geographic information system and statistics to monitor coastline change over the period of 1973 to 2015 from Landsat images of Multispectral (MSS), Thematic Mapper (TM), Enhanced Thematic Mapper Plus (ETM+), Operational Land Imager (OLI) at coastal area of Mekong delta. An advanced toolbox is developed for the work of atmospheric and radiometric correction of Landsat images as well as influence of tidal range is taken into account to obtain mean water level. Tasseled Cap and Normalized Difference Water Index (NDWI) algorithm is applied to separate land-water interface for extracting shorelines. Besides, a digital shoreline assessment system (DSAS) tool is used to analyze shoreline rate by statistic parameters as Shoreline Change Envelope (SCE), End Point Rate (EPR) and Linear Regression (LRR). Furthermore, uncertainty assessment for this methodology based on topographic surveying and Google Earth images. Moreover this research explored relationships between the accretion and erosion of land and the sediment load of the Mekong River. The results revealed a general pattern of accretion and erosion. The eastern coast, which is fragmented by 9 estuaries, was significant accretion and erosion, especially annual erosion rate of around 40 meter at Bo De estuary is noted. Meanwhile the western coast is rather stable, particularly annual accretion rate of up to 90-95 meter at Datmui commune of Camau province. This study indicated there is relative difference of coastline change rate among periods of 1973-1990, 1990-2005 and 2005- present. And the study illustrates the rate of shoreline change is significantly associated with sediment discharge on Mekong River through statistic approach, especially the phase of sediment flow decrease by dam and sand mining on Mekong River in recent 15 years. The results of methodology and maps from this research may be useful in planning and management of this exposed coastline.","hydrodynamics; alongshore current; tidal current; numerical modelling; wave-resolving model; SWASH","en","conference paper","","","","","","","","","","","Coastal Engineering","","",""
"uuid:424c4f19-4bd2-48cd-9221-b6e3e8426636","http://resolver.tudelft.nl/uuid:424c4f19-4bd2-48cd-9221-b6e3e8426636","Uncertainty assessment in coastal morphology prediction with a bayesian network","Kroon, J. (TU Delft Coastal Engineering; Svašek Hydraulics); de Schipper, M.A. (TU Delft Coastal Engineering; Shore Monitoring & Research); den Heijer, C. (TU Delft Management Support; TU Delft Coastal Engineering; Deltares); Aarninkhof, S.G.J. (TU Delft Coastal Engineering); van Gelder, P.H.A.J.M. (TU Delft Safety and Security Science)","Aagaard, T. (editor); Deigaard, R. (editor); Fuhrman, D. (editor)","2017","In the present time of sea-level rise and climate change a global shift has occurred toward sandy coastal protection measures and Building with Nature. These type of protection measures impose extra uncertainty on the instantaneous state of the coastal system over time for which present deterministic forecasting techniques are not capable of providing necessary information on uncertainties and hence could display a false sense of accuracy and skill. At present in long term morphological modeling a full systemic approach for uncertainty assessment has not yet been applied. This paper investigates the use of a Bayesian Network as a tool for uncertainty assessment in decadal scale morphological modeling for the evolution of a mega nourishment at the Dutch North-Holland coast, the Hondsbossche Dunes (HBD). The Bayesian Network is trained with an existing set of model data and field data of one year bed development. The Bayesian Network successfully transfers the bandwidth in input variables, model uncertainty and calibration uncertainty to an uncertainty bandwidth around the output parameter of choice.","Bayesian Network; uncertainty; morphodynamics; numerical modelling; Building with Nature","en","conference paper","","","","","","","","","","","Coastal Engineering","","",""
"uuid:b10bd890-22ff-419e-996e-181da3712ae0","http://resolver.tudelft.nl/uuid:b10bd890-22ff-419e-996e-181da3712ae0","Including tidal currents in a wave-resolving model","de Wit, F.P. (TU Delft Environmental Fluid Mechanics); Tissier, M.F.S. (TU Delft Environmental Fluid Mechanics); Reniers, A.J.H.M. (TU Delft Environmental Fluid Mechanics)","Aagaard, T. (editor); Deigaard, R. (editor); Fuhrman, D. (editor)","2017","Coastal systems are influenced by a combination of waves and tides. In certain cases, tide-induced alongshore currents can be of similar order or even larger than wave-induced currents. Until now, however, no detailed wave-resolving modelling studies included tidal currents. This paper presents a method to implement alongshore tidal currents by adding a pressure term to the alongshore momentum balance and includes modifications to the numerical wave maker to allow for both waves and currents to be generated. The method is successfully validated by comparing simulations with and without inclusion of the tidal current to measurements obtained from the COAST3D data set. Wave prediction is equally good with and without the tidal implementation, but the alongshore current and its distribution over the cross-shore are much better predicted by the model with the new method.","hydrodynamics; alongshore current; tidal current; numerical modelling; wave-resolving model; SWASH","en","conference paper","","","","","","","","","","","Environmental Fluid Mechanics","","",""
"uuid:92637820-7a37-49ba-a6ab-00450c3e2642","http://resolver.tudelft.nl/uuid:92637820-7a37-49ba-a6ab-00450c3e2642","Infragravity waves and bore merging","Tissier, M.F.S. (TU Delft Environmental Fluid Mechanics); Bonneton, P (Université de Bordeaux); Ruessink, Gerben (Universiteit Utrecht)","Aagaard, T. (editor); Deigaard, R. (editor); Fuhrman, D. (editor)","2017","The phenomenon of bore merging is investigated using two high-resolution laboratory experiments including bichromatic and irregular wave conditions. The locations at which waves start merging are identified and the hydrodynamic conditions in the vicinity of the merging points are examined. Bore merging takes place in the inner surf zone for all conditions considered. The infragravity- to short-wave height ratio is close to or larger than one at the merging point, indicating that bore merging occurs in a part of the surf zone that is already dominated by the infragravity waves. Our data analysis is supplemented by numerical simulations that confirms the importance of infragravity waves in the occurrence bore merging. Moreover, our simulations suggest that bore merging has a very limited effect on the infragravity wave field. This casts doubts on the importance of bore merging as an infragravity wave generation mechanism.","hydrodynamics; alongshore current; tidal current; numerical modelling; wave-resolving model; SWASH","en","conference paper","","","","","","","","","","","Environmental Fluid Mechanics","","",""
"uuid:b038f8a2-d2db-46fc-8419-3141f21faa1c","http://resolver.tudelft.nl/uuid:b038f8a2-d2db-46fc-8419-3141f21faa1c","Surf Wave Hydrodynamics in the Coastal Environment","Salmon, J.E. (TU Delft Environmental Fluid Mechanics)","Pietrzak, J.D. (promotor); Holthuijsen, L.H. (copromotor); Delft University of Technology (degree granting institution)","2016","Stochastic wave models play a central role in our present-day wave modelling capabilities. They are frequently used to compute wave statistics, to generate boundary conditions and to include wave effects in coupled model systems. Historically, such models were developed to predict the wave field evolution in deep water where the conditions of Gaussianity generally hold. However, in recent decades, such models have been applied to the shallower coastal environment where the stochastic representation of the dominant wave physics becomes questionable. This is primarily due to the increased influence of wave nonlinearity and the additional depth-induced wave processes that are dominant in this region.
Unfortunately, the two most dominant wave processes in the surf zone: depth-induced wave breaking and nonlinear triad wave-wave interactions are also the least well represented and understood. This is due to both their complexity and the scarcity of analytical solutions for realistic wave fields. As such, they represent a significant obstacle in the accurate modelling of the wave dynamics in the coastal region. Providing accurate representations of these wave processes is essential to answering the questions demanded from stochastic wave models from coastal engineers for coastal management and design. Such advancements are necessary to improve our understanding of wave-induced processes, to reduce costs in managing the coastal environment and to tackle contemporary issues such as uncertainties with respect to increased sea level rise.
Due to the complexity of depth-induced wave breaking, a complete representation of this wave process does not exist for both stochastic and deterministic modelling frameworks. Although there is extensive literature on the subject of parameterizing depth-induced wave breaking in a stochastic sense, these parameterizations are inconsistent with theory, observations and (deterministic) model predictions. In particular, present-day modelling defaults perform poorly over (near-)horizontal bathymetries with over-enhanced wave dissipation of locally-generated waves and insufficient dissipation of swell waves. Equally, nonlinear triad wave-wave interactions are poorly represented in stochastic wave models due to the problem of closure and the impractical computational expense of more accurate representations. In particular, the most commonly applied parameterization in the wave literature incorrectly predicts the evolution of the spectral shape, and the convergence to an equilibrium high-frequency tail deep in the surf zone. Correctly resolving these issues is essential for the management of many of the activities occurring at the coast; from the design of coastal defenses to feasibility studies for wave energy converters, from port operation and availability to vessel navigation, from understanding the ecology at the coast to the fisheries, and from managing leisure and tourism to safety at the coast.
In this work, we investigate the process of depth-induced wave breaking through a comprehensive analysis of the literature and a comparison of modelling performance. Here, we use an extensive set of wave observations representing a large range of wave conditions and bathymetric profiles. The analysis demonstrates that no currently available depth-induced breaking source term is capable of sufficiently representing the process of depth-induced wave breaking. This is shown to be in agreement with the wave literature with parameterizations either over-predicting wave dissipation for locally generated waves or under-predicting wave dissipation for non-locally generated waves over (near-)horizontal bathymetries. To address this issue, a new joint scaling using both local wave and bathymetric conditions is proposed. Using both the normalized characteristic wave number and local bottom slope unifies two approaches prevalent in the wave literature. This is shown to improve the model performance for the dissipation of both locally and non-locally generated waves over (near-)horizontal bathymetries.
Furthermore, the validity of the assumption that wave dissipation can be modelled as analogous to a 1D dissipative bore is explored. Subsequently, a heuristic directional modification is introduced for depth-induced wave breaking dissipation models. This directionally partitions the 2D spectrum into several directional partitions that are assumed to be unidirectional. Model results demonstrate that the effect of the directional partitioning is to reduce the dissipation of wave energy and to enhance the significant wave height; in agreement with field measurements. Not only is this modification shown to be applicable to the joint wave breaking parameterization proposed in this study, but also for well-established parameterizations.
The effects of both the proposed scaling and directional modification are then reviewed from an operational context and are compared to state-of-the-art source terms, field observations and a hypothetical storm representative of Dutch design conditions. Such design conditions are expected to be representative of design conditions found globally. In an environment where storm intensities may be increasing, for example due to global warming, the results of wave breaking models near the coast under such extreme conditions become of greater relevance. The influence of wave breaking models in coupled model systems is anticipated to provide important new insights in understanding the various wave-driven processes along our coasts.
Next, the representation of the nonlinear triad wave-wave interactions in stochastic wave models is reviewed. In particular, the collinear approximation used to transform 1D triad source terms for implementation in 2D stochastic wave models is revisited. These approximations are necessitated by considerations of computational efficiency. The conventional collinear approximation is shown to be inconsistent at the unidirectional limit and to be a primary source of modelling error. Instead of converging to the values predicted by the 1D triad source terms at the unidirectional limit, the energy transfers as computed by stochastic wave models are shown to become unbounded. This results in a dimensional calibration coefficient which is at least an order of magnitude smaller than that found in the wave literature. Consequently, for directional wave conditions, 1D triad source terms implemented with the conventional collinear approximation insufficiently capture the wave evolution. To address this problem, a new collinear approximation is presented which accounts for the wave energy contained within a finite directional bandwidth. This collinear approximation is shown to converge correctly at the unidirectional limit and to agree well with predictions from a second-order accurate deterministic wave model. In particular, better agreement is shown in the modelling prediction of the spectral shape and related integral parameters, e.g. wave period, under idealized wave conditions. Under certain conditions, these error reductions are shown to be more significant than differences between the underlying triad models.
The contribution of this work demonstrates that while the underlying theory underpinning stochastic wave modelling in the coastal environment still remains questionable, the accurate determination of wave statistics in the coastal zone is tenable. With the advancements presented in this study, the new source terms correspond better with the current wave literature and are shown to provide significant steps forward over existing default source terms. The developments presented here are anticipated to form the foundation for future source term research, and to be used for the representation of the dominant wave physics in the coastal environment in operational wave models.","wave dynamics; numerical modelling; coastal systems; wave breaking; nonlinear interactions; stochastic models","en","doctoral thesis","","978-94-92516-17-6","","","","","","","","","Environmental Fluid Mechanics","","",""
"uuid:4000389f-6da7-49ae-b488-0bd821adcc6f","http://resolver.tudelft.nl/uuid:4000389f-6da7-49ae-b488-0bd821adcc6f","Slope failure analysis using the random material point method","Wang, B. (TU Delft Geo-engineering); Hicks, M.A. (TU Delft Geo-engineering); Vardon, P.J. (TU Delft Geo-engineering)","","2016","The random material point method (RMPM), which combines random field theory and the material point method (MPM), is proposed. It differs from the random finite-element method (RFEM), by assigning random field (cell) values to material points that are free to move relative to the computational grid rather than to Gauss points in a conventional finite-element mesh. The importance of considering the effects of both large deformations and the spatial variability of soil strength properties in slope stability analyses is highlighted, by comparing RMPM solutions with RFEM and deterministic MPM solutions for an idealised strain-softening clay slope characterised by a spatially varying undrained shear strength. The risks posed by potential slides are quantified by the extent of retrogressive failure – that is, due to the tendency for secondary failures to be triggered by the removal of support from the remaining soil mass caused by the initial failure. The results show that RMPM provides a much wider range of solutions, in general increasing the volume of material in the failure compared with the RFEM solutions, which are usually limited to the initial slide. Moreover, the anisotropic nature of soil heterogeneity is shown to have a significant influence on the nature and extent of failure","landslides; numerical modelling; statistical analysis","en","journal article","","","","","","","","2017-06-30","","","Geo-engineering","","",""
"uuid:0611ddb7-324a-479b-bc12-28dec5901f02","http://resolver.tudelft.nl/uuid:0611ddb7-324a-479b-bc12-28dec5901f02","A macroelement framework for shallow foundations including changes in configuration","Pisano, F. (TU Delft Geo-engineering); Flessati, L; di Prisco, C","","2016","Macroelement plasticity models are being increasingly applied to study non-linear soil–foundation interaction (SFI) problems. Macroelement models are particularly appealing from a computational standpoint, as they can capture the essence of SFI by means of a few degrees of freedom. However, all the macroelement formulations available in the literature suffer from the same limitation, that is the incapability of accounting for changes in both geometry and loading/boundary conditions. Accordingly, macroelement models are usually calibrated to analyse a given boundary value problem, with no chance of handling situations with significant variations in embedment, lateral surcharge and/or phreatic level. The present work shows how standard soil modelling concepts can be exploited to reproduce relevant ‘configurational features’ of non-linear SFI. A macroelement framework is here proposed to simulate the drained load–settlement response of shallow footings on sand in the presence of varying surface/body forces. As a first step, the ideal case of a weightless soil layer is exclusively considered. The macroelement constitutive equations are conceived/calibrated on a minimal set of finite-element results; the satisfactory predictive capabilities of the macroelement model are finally demonstrated by retrospectively simulating selected finite-element tests.","bearing capacity; ootings/foundations; numerical modelling; plasticity; settlement; soil/structure interaction","en","journal article","","","","","","","","2018-02-01","","","Geo-engineering","","",""
"uuid:d592c081-8a8c-4c07-a768-bb28ed8351e3","http://resolver.tudelft.nl/uuid:d592c081-8a8c-4c07-a768-bb28ed8351e3","An extension of the drift-flux model for submarine granular flows","Weij, D. (TU Delft Offshore and Dredging Engineering); Keetels, G.H. (TU Delft Offshore and Dredging Engineering); Goeree, J.C. (TU Delft Offshore and Dredging Engineering); van Rhee, C. (TU Delft Offshore and Dredging Engineering)","","2016","To model submarine flows of granular materials we propose an extension of the drift-flux approach. The extended model is able to represent dilute suspensions as well as dense granular flows. The dense granwular flow is modelled as a Herschel–Bulkley fluid, with a yield stress that depends on the dispersed phase pressure. Qualitative numerical experiments show that the model is able to correctly reproduce the stability of submerged sand heaps with different internal angles of friction and initial slopes. When initially starting with heaps with an angle smaller than the internal angle of friction, the heaps are stable. When starting with heaps with angles larger than the internal angle of friction, a flow of solid material is initiated. The flow later stops when the bed is at an angle smaller than the internal angle of friction.","granular flow; granular pressure; numerical modelling; openFOAM; sand-water mixtures","en","journal article","","","","","","","","","","","Offshore and Dredging Engineering","","",""
"uuid:783456a8-77ba-4dd6-91ff-6a1862cc71e7","http://resolver.tudelft.nl/uuid:783456a8-77ba-4dd6-91ff-6a1862cc71e7","Physical Processes Driving the Morphological Evolution of the Roggenplaat Tidal Flat","de Vet, P.L.M. (TU Delft Environmental Fluid Mechanics); van Prooijen, Bram (TU Delft Environmental Fluid Mechanics); Schrijvershof, R. (Deltares); van der Werf, JJ (Deltares); Schrijver, MC (Deltares); Wang, Zhengbing (TU Delft Coastal Engineering)","","2016","The flow velocities in tidal channels are already rather complex by the presence of various tidal components, wind driven flow and estuarine circulations. An extra level of complexity is introduced when the flow on top of an intertidal
flat is considered (Le Hir, 2000). This research aims at understanding the complex flow patterns on top of a large-scale intertidal flat and on assessing the morphological consequences. The focus of this study is on the Roggenplaat, which is with an intertidal area of 14.6 km2 the largest intertidal flat
fully surrounded by channels of the Eastern Scheldt (The Netherlands, see Figure 1). The flat is subject to a mean tidal range of 2.6 m and is characterized by a typical sediment grain size of 0.25 mm. Two large tidal creeks in the Northwest
are the remainder of the merging of separate flats 80-150 years ago. Since the late 1980s, the flats in the Eastern Scheldt have been eroding severely because of the construction of a storm surge barrier and various compartment dams (Louters, 1998). A nourishment of 1.65 million m3 is planned on this flat for 2017, to compensate for its lowering. This study combines the results of an Acoustic Doppler Current Profiler (ADCP) measurement campaign with the results of a numerical model. Apart from validation material for the numerical model, the ADCP data is also analysed individually. The focus of this study is on the present-day hydrodynamics and morphodynamics of the Roggenplaat, which is essential knowledge for the design of appropriate nourishment strategies. Furthermore, physical insights achieved in this study are relevant for the understanding of other large-scale intertidal flats around the world.","intertidal flat; Eastern Scheldt; field measurements; numerical modelling","en","abstract","","","","","","","","","","","Environmental Fluid Mechanics","","",""
"uuid:8a5eb35f-8d44-4267-9193-4275bdab429d","http://resolver.tudelft.nl/uuid:8a5eb35f-8d44-4267-9193-4275bdab429d","Hydrodynamics in the mid-field plume region of the Rhine ROFI","Rijnsburger, S. (TU Delft Environmental Fluid Mechanics); Audibert, R.F. (University of Washington); Souza, Alejandro J. (National Oceanography Center); Horner-Devine, Alexander R. (University of Washington); Pietrzak, J.D. (TU Delft Environmental Fluid Mechanics)","","2016","River plumes, also regions of freshwater influence , are important features to understand because of their impact on the current structure, stratification and the transport of fine sediments, nutrients and contaminants. One important river plume is the Rhine ROFI. Prior studies have sought to understand far-field dynamics where cross-shore straining is dominant (Simpson & Souza, 1995; Souza & Simpson,1995; De Boer et al., 2008). However, less is known about the mid-field region of this river plume, where fronts matter as well. Here we use field observations from a 6 week measurement campaign in fall 2014 to investigate the dynamics of the mid-field region of het Rhine ROFI. We will focus on the interaction between far-field processes, such as tidal straining, and near field processes, such as fronts. The Rhine ROFI is of interest because the Dutch coast has been modified by extending the Port of Rotterdam and the construction of the Sand Engine that extends into the southern North Sea. These perturbations might impact the currents, the ROFI and the distribution of fine sediment, nutrients and contaminants. Therefore, the understanding of this is of importance. During September and October 2014, a large field observational campaign was conducted off the Dutch coast close to the sand Engine, 10 km north of the river outflow. Measurements were made at two locations, 2 and 5.5 km offshore (see Figure 1). Moorings, with Conductivity Temperature Depth (CTD) and Optical Backscatter (OBS) instruments at different depths, were deployed to obtain vertical profiles of salinity and suspended sediment concentrations (SSC). In addition, at each location a bottom-mounted Acoustic Doppler Current Profiler (ADCP) measured vertical velocity profiles. Radar images of the area were used to gain surface information, specifically about frontal propagation in the vicinity of the measurement locations. The weather conditions were highly variable during the six week period. There were very calm periods, but also storms, which completely destroyed stratification. The wind direction changed during the campaign as well. In addition to the data, numerical modelling with a 3D hydrostatic model will be used to gain information of the entire mid-field plume.","river plume; in-situ measurements; cross-shore straining; numerical modelling; frontal dynamics","en","abstract","","","","","","","","","","","Environmental Fluid Mechanics","","",""
"uuid:5cc8dbd4-5c39-486a-b381-5bd2f19dc91e","http://resolver.tudelft.nl/uuid:5cc8dbd4-5c39-486a-b381-5bd2f19dc91e","Thermal management of solid state lighting module","Ye, H.","Zhang, G.Q. (promotor)","2014","Solid-State Lighting (SSL), powered by Light-Emitting Diodes (LEDs), is an energy-efficient technology for lighting systems. In contrast to incandescent lights which obtain high efficiency at high temperatures, the highest efficiency of LEDs is reached at low temperatures. The thermal management in LED product is then a key design parameter as the high operation temperature directly affects the maximum light output, quality, reliability and life time. Solutions are sought in optimizing the thermal path, materials with better thermal conductivity and increasing the performance of convection and radiation. However, the apparent dilemma is to optimize light efficiency and effectively designing thermal management. In order to be able to optimize the LED temperature, an electrical-thermal-luminous-chromatic (E-T-L-C) model was developed that takes into account the thermal effect on the energy conversion rate from electric power (E) to primary blue light and from blue light into yellow light as a function of the in-situ temperature (T). As the conversion rates of the die and phosphor differ, the white light performance changes both in flux (L) and spectrum (C). The model was successfully verified using three commercially available LED packages. Furthermore, the model was also used to study the effect of layer thickness and particle density variations of the phosphorous layer on the thermal performance and light quality. As the temperature is both critical to light performance and thermal management, knowing the temperature in the LED is indispensable. The diode forward voltage method with pulsed currents has been widely used to monitor the junction temperature (Tj) of LEDs. However, this method suffers from a thermal transient effect (TTE) resulting in measurement errors. Using Thermoelectric (TE) physics this phenomenon was explained and a group of experiments was used to study the TTE in Tj measurements for high-voltage (HV) LEDs. The measurement uncertainty was more than ± 10 C which is not acceptable for accurate monitoring. Therefore, an improved Pulse-free Direct Junction Temperature Measurement (DJTM) method was applied to HV LEDs to reduce the errors and to achieve an accurate in situ Tj measurement using DC currents. This also resulted in a simpler setup and a simpler measurement sequence. Although the Tj is the most relevant temperature to know, the LED package or case temperature is much easier to measure and apply. A micro-electromechanical-system (MEMS) based, temperature triggered, switch was developed as a cost-effective solution for smart cooling control in SSL systems. The switch was embedded in a silicon substrate and fabricated with a single-mask 3D micromachining process. The device switched on at a designed temperature threshold with a small contact resistance, and switched off when the temperature drops below that limit. Through the embedded MEMS switch, an automatic temperature controller was obtained without adding electrical components to the package. As standard semiconductor manufacturing processes are used, integration and fabrication in future silicon based SSL systems is expected to be straight forward. The phase change from liquid to vapor can be used as a driving force to move the fluid in a cooling system. Based on this principle, a cooling solution based on micro-fluidics and MEMS technology was presented. A test vehicle was constructed consisting of a miniaturized evaporator with a fluid channel and an embedded bulk silicon temperature sensor. A commercial HP LED package was mounted on the evaporator, with the goal to achieve maximum light output using a very small coolant flow rate. Results showed that the package obtained high efficiency and correspondingly increased light output by the two-phase cooling. Additionally, via numerical simulation the phase change phenomenon and temperature distribution inside the evaporator was further investigated and optimized water flow rates for specific input powers of the package were calculated. Micro or micro-wick heat pipes (HPs) have received considerable attraction in the past decades especially for cooling of electronics in a limited volume. Among the HPs, the micro HP (MHP) and loop HP (LHP) with micro wicks are most preferred for their high efficiency, small dimension, and compatible process with semiconductor devices. Especially, the LHP possess all the main advantages of traditional HPs and next to that they can transfer heat over distances up to several meters at any orientation in the gravity field. Although silicon is one the most favorable materials for MHP and LHPs, polymer based MHP and LHPs are very attractive for further investigation. Therefore, a package, using a silicon substrate with temperature sensors and a polymer based LHP was designed, manufactured and assembled. This package was able to provide low and relatively stable temperature, enabling higher optical power, more luminous flux and less color shift. Last but not least, whatever cooling configuration is made, a constant element is the heat sink, which eventually dissipates the heat to the ambient environment. Thus, the heat sink design is essential but it needs a case by case approach. Using a thermal design of vertical fin arrays with HPs as passive cooling the design methodology was demonstrated. The HPs may be converted into active/passive liquid cooling as presented previously. As the natural convection and radiation dominate heat transfer in this case, the optimum vertical fin spacing, which is the critical parameter for natural convection, was calculated by the most used empirical correlations. In addition, the fin spacing was further numerical investigated and optimized using Computational Fluid Dynamics (CFD). The design was verified by building a prototype and the experimental and numerical results correlated well. The achieved results show the HPs supply good equivalent thermal conductivity with less weight and volume compared to copper or aluminum base. Furthermore, the HP (liquid cooling) enhanced the natural convection by high thermal conductivity and less obstruction to air flow.","solid state lighting; light emitting diode; thermal management; electrical thermal luminous chromatic model; junction temperature; temperature sensor; MEMS; two phase cooling; voop heat pipe; vertical fin array; numerical modelling; CFD","en","doctoral thesis","","","","","","","","","Electrical Engineering, Mathematics and Computer Science","Electronic Components, Technology and Materials","","","",""
"uuid:97f11a22-56ad-4504-a42a-cfedcb3677ca","http://resolver.tudelft.nl/uuid:97f11a22-56ad-4504-a42a-cfedcb3677ca","Towards a Practical Application of Numerical Models to Predict Wave-Structure Interaction: An Initial Validation","Van den Bos, J.; Verhagen, H.J.; Zijlema, M.; Mellink, B.","","2014","A more detailed understanding of porous flow inside a rubble-mound structure may have potential benefits in breakwater design. Numerical models are expected to be a useful additional research tool in this field, provided that their calculation results can be validated against measurements. This paper presents the results of a systematic effort to validate a set of different numerical models for a strongly simplified model set-up. The results of this effort will be used to select models for a next stage in which the complexity of the model set-up is increased. By means of this step-by-step approach a good insight in the capabilities and limitations of the various models is achieved.","rubble-mound structures; porous flow; numerical modelling; VOF modelling; breakwaters; ICCE 2014","en","conference paper","Coastal Engineering Research Council","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:23af0b63-1add-4004-a9c5-e0cbb920c11f","http://resolver.tudelft.nl/uuid:23af0b63-1add-4004-a9c5-e0cbb920c11f","Mechanical Behaviour of Lined Pipe","Hilberink, A.","Bijlaard, F.S.K. (promotor); Sluys, L.J. (promotor)","2011","Installing lined pipe by means of the reeling installation method seems to be an attractive combination, because it provides the opportunity of eliminating the demanding welds from the critical time offshore and instead preparing them onshore. However, reeling of lined pipe is not yet proven technology. From previous research it is known that lined pipe undergoing high plastic strains during reeling, exhibits liner wrinkling and extensive ovalisation. The main objective of this study is to investigate the possibility of installing lined pipe by means of the reeling installation method. A combination of pure bending numerical models and full scale four point bend tests were used to reach the objective. The cascade of events exhibited by the lined pipe in pure bending was fully understood. Liner wrinkling appeared to be the main failure mode of lined pipe during bending. The sensitivity of the wrinkling behaviour of the confined liner in pure bending for several geometric, material and contact parameters was examined by means of a parameter study. From this study it is concluded that reeling of lined pipe can become technically feasible, most effectively by adjusting the geometric and contact parameters of the lined pipe.","lined pipe; double walled pipe; bending; mechanically bonded; numerical modelling; Abaqus","en","doctoral thesis","","","","","","","","2011-12-08","Civil Engineering and Geosciences","Design and Construction","","","",""
"uuid:78726a2e-e542-4aea-bf7f-8611481e1091","http://resolver.tudelft.nl/uuid:78726a2e-e542-4aea-bf7f-8611481e1091","A mathematical model for baterial self-healing of cracks in concrete (abstract)","Zemskov, S.V.; Jonkers, H.M.; Vermolen, F.J.","","2011","","self-healing; numerical modelling; finite-element method; level set method","en","conference paper","","","","","","","","","Civil Engineering and Geosciences","Structural Engineering","","","",""
"uuid:067eafc2-d813-479c-a821-2e6f3c3c9dcf","http://resolver.tudelft.nl/uuid:067eafc2-d813-479c-a821-2e6f3c3c9dcf","Multi-scale simulation of fluvio-deltaic and shallow marine stratigraphy","Dalman, R.A.F.","Kroonenberg, S.B. (promotor); Weltje, G.J. (promotor)","2009","SimClast is a basin-scale 3D stratigraphic model, which allows several interacting sedimentary environments. We developed it from 2004 to 2008 at Delft University of Technology and implemented part of the Meijer (2002) code for accounting, loading and storing algorithms. SimClast is a fully plan view 2D, depth-averaged model, allowing the complex interaction between fluvial and wave influences on deltaic and shoreface development to be studied. It focuses on theoretical experiments, as quantitative experiments are intrinsically difficult to recreate in real world settings. Yet there lies the great strength of numerical modelling, as we can improve upon the understanding of these systems by focussing on the process forming and removing the deposits. The modelling applications focus especially on the erosional and nondepositional events as these probably represent the greatest amount of “stratigraphic time”. Short-term, high-resolution processes are coupled with the long-term stratigraphic model by nesting a parameterised version of the high-resolution processes. We extrapolate physical and empirical relationships of the geomorphological development and implement these. A necessary constraint on these long-term models is a relatively large grid sizing (i.e. km scale), as the area to be modelled is on the scale of continental margins and the modelling time is on the scale of many millennia. Areas of special importance are modelled by implementing sub-grid scale processes into a large-scale basin-filling model; this refines the model dynamics and the resulting stratigraphy. Processes included are; fluvial channel dynamics and overbank deposition, river plume deposition, open marine currents, wave resuspension, nearshore wave induced longshore and crosshore transport. This combined modelling approach allows insight into the processes influencing the flux of energy and clastic material and the effect of external perturbations in all environments. Many governing processes work on relatively small scales, e.g. in fluvial settings an avulsion is a relatively localised phenomenon, yet they have a profound effect on fluvial architecture. This means that the model must mimic these processes, but at the same time maintain computational efficiency. Additionally, long-term models use relatively large grid sizing (km scale), as the area to be modelled is on the scale of continental margins. We solve this problem by implementing the governing processes as sub-grid scale routines into the large-scale basin-filling model. This parameterization greatly refines morphodynamic behaviour and the resulting stratigraphy. SimClast recreates realistic geomorphological and stratigraphic delta behaviour in river and wave-dominated settings.","numerical modelling; stratigraphy; fluvial; deltaic; shallow marine; simulation","en","doctoral thesis","","","","","","","","","Civil Engineering and Geosciences","Geotechnology","","","",""
"uuid:ee1cdcb8-214d-4364-9c04-2e40e6e87ba9","http://resolver.tudelft.nl/uuid:ee1cdcb8-214d-4364-9c04-2e40e6e87ba9","Voorspelinstrument duurzame vaarweg: Calibration of the multi-domain model","Yossef, M.F.M.; Stolker, C.; Giri, S.; Hauschild, A.; Vuren, S. van","","2008","","riviermorfologie; river morphology; numerieke modellen; numerical modelling; calibratie; model calibration; sedimenttransport in rivieren; sediment transport in rivers","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:ae6c1a29-c9c0-4bfd-b492-e92f927cf4c3","http://resolver.tudelft.nl/uuid:ae6c1a29-c9c0-4bfd-b492-e92f927cf4c3","Verbetering DIPRO","Verheij, H.J.; Prooijen, B. van","","2007","","numerieke modellen; numerical modelling; waterbeweging door schepen; ship-induced water motion; Noordzeekanaal","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:c5be94eb-1d98-4e7c-b73f-68e2d7754e98","http://resolver.tudelft.nl/uuid:c5be94eb-1d98-4e7c-b73f-68e2d7754e98","Koploperproject LTV-O&M - Thema veiligheid - deelproject 1: Inventarisatie historische ontwikkeling van de hoogwaterstanden in het Schelde estuarium","Jeuken, M.C.J.L; Hordijk, D.; Ides, S.; Kuijper, C.; Peeters, P.; Sonneville, B. de; Vanlede, J.","","2007","","veiligheid; safety; overstromingen; floods; hoogwater; flood level; estuaria; estuaries; numerieke modellen; numerical modelling; Schelde","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:7754c382-0915-4475-8c08-a32fad37d5da","http://resolver.tudelft.nl/uuid:7754c382-0915-4475-8c08-a32fad37d5da","Numeriek modelonderzoek naar de reductie van de neer in de monding van de voorhaven van IJmuiden","Bijlsma, A.C.; Mol, A.C.S.; Winterwerp, J.C.","","2007","","havens; harbours; havenmonden; harbour mouths; stroming; flow; neren; eddies; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:d8b275cd-2797-4214-922d-6febafa9a87b","http://resolver.tudelft.nl/uuid:d8b275cd-2797-4214-922d-6febafa9a87b","Process-based modelling of turbidity-current hydrodynamics and sedimentation","Groenenberg, R.M.","Kroonenberg, S.B. (promotor); Luthi, S.M. (promotor)","2007","The production potential of deep-water reservoirs is primarily determined by rock bulk volume, porosity and permeability. Quantification of the geometry and spatial distribution of reservoir sands in deep-water deposits can provide crucial information to assess sand body volume, connectivity and the distribution of permeability baffles. This study aims to investigate the influence of turbidity-current process, sediment composition and basin-floor relief, on the geometry and spatial distribution of reservoir sands in turbidite fans. For this purpose, a process-based model has been developed which simulates turbidity-current flow, erosion, and deposition based on principles of fluid dynamics that can deal with arbitrary basin-floor topography and accommodates various grain sizes. It employs the depth-averaged shallow-water approximation in combination with the Boussinesq approximation for density-driven flow in three dimensions. Sediment transport is modelled by an advection-diffusion type equation, and exchange with the bed is largely based on existing empirical models for sediment entrainment and deposition. The model is solved numerically on a rectangular grid representing topography by means of a second-order finite-difference approximation, and employs a shock-capturing technique to accurately model the discontinuous flow front characteristic of density-driven flows. Results are presented of laboratory-scale model validation tests, in which modelling results are quantitatively and qualitatively compared to experimental data. Laboratory experiments involve small-scale flows interacting with complex topographic features as well as multiple successive flows over the same erodible bed. Results indicate that the model is capable of simulating turbidity-current hydrodynamics and sedimentation with an acceptable degree of accuracy under a wide range of conditions.","deep-water reservoirs; turbidity currents; deposits; numerical modelling; finite-difference; schock-capturing; laboratory experiments; validation","en","doctoral thesis","","","","","","","","","Civil Engineering and Geosciences","","","","",""
"uuid:53768609-192a-4fc4-96fb-9b5d038e09b2","http://resolver.tudelft.nl/uuid:53768609-192a-4fc4-96fb-9b5d038e09b2","Morphodynamic modelling for Thuan An inlet, Vietnam","Lam, T.N.; Stive, M.J.; Verhagen, H.J.; Wang, Z.B.","","2006","Thuan An is a tidal inlet located in Vietnam in a tropical monsoon area. The inlet is very dynamic and variable under the influences of not only tides and waves from the sea but also flows and floods from upstream rivers. Therefore, morphodynamic behaviour of the inlet is very complicated and not well understood. Studies on inlet are also facing with problems of data insufficient. As an effort to gain more understanding on the tidal inlet behaviour, this paper presents a study of the inlet morphodynamics using a numerical modelling approach with the applications several modelling packages including DELFT3D and SOBEK-RURAL developed by WL|Delft Hydraulics. SOBEK has been used to simulate properly the floods in the rivers and on the floodplain. DELFT3D has been used to simulated hydrodynamics of the coastal waters and morphodynamics of the inlet. From the results of the numerical modelling experiments, some behavioural patterns of the inlet, like migration of the inlet channel, can be explained.","tidal inlet; hydrodynamics; morphology; numerical modelling","en","conference paper","","","","","","","","","Civil Engineering and Geosciences","Hydraulic Engineering","","","",""
"uuid:cb242658-28f7-464a-b97d-cc9bc9c2fe9d","http://resolver.tudelft.nl/uuid:cb242658-28f7-464a-b97d-cc9bc9c2fe9d","Benchmarking database for Delft3D","Walstra, D.J.R.; Koster, L.","","2006","","ijking; calibration; validatie; validation; numerieke modellen; numerical modelling","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:3d58dbf8-94f8-473a-b678-7aa40dc5fb1d","http://resolver.tudelft.nl/uuid:3d58dbf8-94f8-473a-b678-7aa40dc5fb1d","Meten en modellen: Verslag fase 1","Villars, M.T.; Gerritsen, H.; Blauw, A.N.; Vogel, H.; Kolb, H.; Geer, F. van; Hof, J. van 't","","2006","","informatieuitwisseling; information exchange; numerieke modellen; numerical modelling; kennisoverdracht; institutional support","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:451eb5ab-c92a-4b68-aa7c-dd077c202c68","http://resolver.tudelft.nl/uuid:451eb5ab-c92a-4b68-aa7c-dd077c202c68","Storm hindcasts Norderneyer Seegat and Amelander Zeegat","Caires, S.; Doorn, N.; Groeneweg, J.; Dongeren, A.R. van","","2006","","stormen; storms; golfmodellen; wave models; numerieke modellen; numerical modelling; Waddenzee","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:634dae4b-4101-4124-ae46-b47c04ed3d96","http://resolver.tudelft.nl/uuid:634dae4b-4101-4124-ae46-b47c04ed3d96","Year simulations with the ZUNO-DD model on the impact of Maasvlakte-2 on large-scale silt transport: A comparison with 14-days simulations","Kessel, T. van.; Goede, E.D. de; Boogaard, H.F.P. van den.","","2006","","havenwerken; harbour works; silttransport; silt transport; numerieke modellen; numerical modelling","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:c2511bac-c222-4cb2-9dc3-bed247c73d1b","http://resolver.tudelft.nl/uuid:c2511bac-c222-4cb2-9dc3-bed247c73d1b","The characterisation, improvement and modelling aspects of Frost Salt Scaling of Cement-Based Materials with a High Slag Content","Copuroglu, O.","Bijen, J. (promotor); van Breugel, K. (promotor)","2006","Blast furnace slag cement concrete is used extensively in a number of countries. In comparison with OPC, it is particularly well known for its excellent performance in marine environments. One dis-advantage of slag cement is its vulnerability to scaling under the combined load of freezing-thawing and de-icing salts. The current investigation was triggered by positive observations regard-ing certain grinding agents used in slag cement production to improve frost salt scaling resistance. The investigation was aimed at explaining the cause of this improvement, at finding alternative methods to improve scaling resistance and at developing a model that would be suitable for the simulation of frost salt scaling behaviour. The investigation conclusions are essentially confined to high slag cement, particularly type CEM III 42,5/B which has a 67% granulated slag content. The w/c ratio of the paste, mortar and concrete specimens is generally maintained at 0,45. Carbonation, known as the critical parameter in frost salt scaling, constituted the key area of inter-est. From previous investigations it is known that carbonation increases porosity and coarsens the pore system in slag cement paste while it actually does the reverse in OPC paste. In the light of lit-erature a new hypothesis has been suggested that the transition zones, which are the weakest points in normal-performance cement-based materials, critically determine frost salt scaling resis-tance. These zones are even more indicative in the case of slag cement pastes because of the sig-nificant amount of transition zones that can be weakened by carbonation unlike with low-slag ce-ment or OPC pastes. In the present investigation it was observed that carbonation causes significant slag cement paste shrinkage. It was especially the transition zones between non-reacted slag particles and hydration products that were found to be affected. Consequently this process leads to the paste having a coarser pore structure thus making it prone to greater water uptake when compared to non-carbonated slag cement paste or OPC paste. The new hypothesis was supported by findings emerging from the ESEM study. It was observed that frost salt scaling attack generates cracks in the microstructure which adhere to slag-matrix interfacial zones. This was confirmed by nano-indentation tests which demonstrated that carbonation creates a significant number of weak zones in the slag cement paste. In the case of OPC paste the picture that emerged was quite different. Natural air carbonation influences the mineral characteristics of cement pastes. The XRD study re-vealed that both slag cement paste and OPC paste possess various types of carbonate minerals, namely: calcite, aragonite and vaterite. However, accelerated carbonation creates overwhelmingly stable calcite phases in both types of cement pastes which are subsequently transformed from me-tastable carbonates. This observation draws attention to the role played by Ca(OH)2 in the good scaling resistance of OPC or low-slag cement systems. A curing regime, especially curing in lime water, appears to be favourable for slag cement materials. However, when compared to the effect of carbonation, the influence that the curing water quality has on scaling resistance is minimal. The contribution made by prolonged water curing to scaling resistance could have been greater but, as it was, the curing periods were limited to 5 weeks in the interests of remaining realistic and practi-cal. The main goal of the project was to investigate the improvements in frost salt scaling resistance in-stigated by chemical grinding agents on the basis of the various positive results gained from the preliminary tests. The intention was to study the effects that the chemicals had on the cement paste microstructure in order to understand frost salt scaling resistance in slag cement concrete and so as to contribute to structural improvements in that area. A microstructural comparative study was carried out on slag cement pastes that contain alkanola-mines/hydrocarboxylates (the best performing ones) and diethylene glycolâbased (the worst per-forming example) grinding agents. The most notable difference was in the pore structure of the paste samples. Alkanolamines/hydrocarboxylates-based grinding agents were found to produce smaller pore sizes when compared to the ones containing diethylene glycol. This is consequently likely to give rise to higher carbonation resistance, lower water uptake and, eventually, to higher frost salt scaling resistance. However, the improvement achieved by alkanolamines / hydrocarboxy-lates is not sufficient to enhance the scaling resistance of the slag cement materials investigated in similar detail to OPC pastes. Another technique that was investigated was sodium monofluorophosphate (Na-MFP) surface treatment. Remarkable improvements in frost salt scaling resistance were achieved by applying a 10% Na-MFP solution to the surface of the carbonated slag cement paste and concrete. The scal-ing resistance improved by about 95% after 7 freeze-thawing cycles. Evidence was found pertain-ing to the reaction between Na-MFP and metastable carbonates in the carbonated slag pastes. The application appears to significantly increase the tensile strength of the carbonated slag cement paste which is extremely favourable in terms of scaling resistance. The study finally resulted in the development of a new integrated model. The model mainly takes into account the glue-spall theory and the hypothesis developed in this thesis and it runs on the Delft Lattice Model platform. The model successfully demonstrates the experimental observations and the crack patterns created by the scaling action. The glue-spall theory suggests that cement-based material surface scaling derives from external ice layer cracking due to further cooling. Cooling consequently generates tensile stress due to the shrinkage of ice and causes cracking when the stress exceeds the tensile strength of the ice. This theory can explain many phenomena including the pessimum effect. On the basis of this theory, the new integrated model proved to be capable of simulating two important experimental observa-tions. Under identical conditions the model can predict higher surface scaling at a 3% salt concen-tration level in relation to higher and lower values. The effect of ice layer thickness is furthermore found to be crucial with respect to frost salt scaling. Under identical material and environmental conditions the thicker external ice layer creates more damage than thinner ice layers. This observa-tion was also successfully demonstrated with the new integrated model.","frost salt scaling; slag; carbonation; microstructure; numerical modelling; CT02.30; Smart Sustainable Infrastructure; CT02.31.31; freeze-thaw resistance of BSFC concrete; Delft Cluster","en","doctoral thesis","","","","","","","","","Civil Engineering and Geosciences","","","","",""
"uuid:d5142d5f-5dcb-4a7a-b8aa-d81f474f03b6","http://resolver.tudelft.nl/uuid:d5142d5f-5dcb-4a7a-b8aa-d81f474f03b6","Conversion of deterministic models into stochastic models: Approach and three worked out examples as guidance for application of data assimilation","Boogaard, H.F.P. van den; El Serafy, G.Y.; Weerts, A.H.; Gerritsen, H.","","2005","","numerieke modellen; numerical modelling; data-assimilatie; data assimilation","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:2c91c8bd-b0a4-4c3b-86ee-f5ad8f1ea24e","http://resolver.tudelft.nl/uuid:2c91c8bd-b0a4-4c3b-86ee-f5ad8f1ea24e","Characterisation of fibre metal laminates under thermomechanical loadings","Hagenbeek, M.","De Borst, R. (promotor)","2005","Fibre metal laminates, such as Arall or Glare, can offer improved properties compared to monolithic materials. Glare for example shows improved fatigue, residual strength, burn-through, impact and corrosion properties with respect to aluminium 2024, together with a considerable weight reduction and competitive costs. A large research program has proven the technological readiness of Glare and the fibre metal laminate has seen its application today in the primary structure of the Airbus A380 super jumbo. However, the effect of temperature on the performance of the fibre metal laminates has not been fully characterised. Differences in thermal expansion coefficients cause residual stresses after curing of the laminate. In service the temperature of the aircraft skin can vary between -55 up to 70 C due to solar radiation and convection, which will affect the thermal and mechanical properties of Glare. A detailed understanding of the behaviour of these laminates is necessary for further improvement of their performance and durability. With the increase in complexity of structures and material systems, the need for powerful design tools becomes evident. In this thesis, the thermo-mechanical behaviour of fibre metal laminates has been characterised via experimental testing and numerical modelling. Experimental tests have been performed to determine the temperature-dependent thermal and mechanical behaviour of unidirectional (UD) glass-fibre epoxy. Calculations based on these test results at room temperature and 80 C for the tension and shear stiffness of three different composite laminate lay-ups showed a good agreement with experimental test results. The UD glass-fibre epoxy data is used as input for the finite element model, together with aluminium 2024-T3 data from the literature. Glare laminates with a special lay-up have been experimentally tested to determine the effect of temperature and mechanical loadings on the laminate characteristics. The test results show that the off-axis and temperature effect can give a reduction of 24% in ultimate strength at room temperature due to off-axis loading and a further reduction of 17% at 80 C temperature. For standard Glare from the literature, where tests at elevated temperature have only been performed in fibre direction, the strength and stiffness reductions are at most 12% compared to room temperature. Numerical simulation is a very powerful tool to investigate the behaviour of materials and structures. Therefore, a thermo-mechanical finite element model, based on a solid-like shell element and including thermal expansion and heat transfer, has been developed to capture the behaviour of Glare in a fully three-dimensional state. The through-the-thickness temperature and stress distributions can thereby be determined, which allows for a straight-forward implementation of damage and plasticity models. Moreover, the solid-like shell element is ideal for thin-walled (aerospace) structures since it can have high aspect ratios without showing Poisson thickness locking, which occurs in standard continuum elements, and can have multiple layers in one element. To account for physical nonlinearities, a strain hardening model for the aluminium 2024-T3 and an orthotropic damage model for the UD glass-fibre epoxy layers in Glare are used. The strain hardening behaviour of aluminium has been modelled with a yield function based on an isotropic Von Mises plasticity formulation. An exponentially saturating hardening law has been assumed, which gives a good agreement with the experimental aluminium 2024-T3 stress-strain curve. A return-mapping algorithm is used to project the stress back onto the yield surface when the stress state violates the loading condition. The concept of continuum damage mechanics is used, with a separate damage parameter for fibre and matrix, to describe the appearance of microcracks that lead to ultimate failure. The equivalent strain measure is obtained by rewriting the yield function of the orthotropic Hoffman plasticity model into a strain-based format. The damage parameters are directly implemented into the stiffness matrix to avoid undesirable coupling terms in the damage matrix. The simulations of the shear and tensile test in transverse direction show a good fit with the experimental curves for the UD glass-fibre epoxy. The transient behaviour is captured by taking the heat capacity, inertia forces and damping into account. Park's method is used to solve the dynamic system of equations. The good performance of the thermomechanical solid-like shell element and the transient solver have been demonstrated for a single element under thermo-mechanical loadings and the snap-through of a cylindrical panel subjected to a concentrated load. Via a number of benchmark tests for practical applications the obtained numerical model is compared with the experimental test results. Bluntnotch test simulations have been performed on Glare3-3/2-0.4 and on a special Glare laminate (tested at 0, 45, 67.5, and 90 off-axis angle), which show a good agreement with experimental results. Simulations of off-axis tensile tests on a 0/90 composite, tensile tests on standard Glare laminates, and off-axis tensile tests on special Glare laminates with additional fibre layers in -45 and 45 direction, also showed a good agreement with experimental results. The thermo-mechanical solid-like shell element and the experimentally obtained material data, presented in this thesis, together create a powerful simulation tool for the effective and accurate characterisation of fibre metal laminates under thermo-mechanical loadings.","fibre metal laminates; thermo-mechanical; numerical modelling; experiments; glass-fibre epoxy; damage; plasticity; temperature; off-axis effects","en","doctoral thesis","","","","","","","","","Aerospace Engineering","","","","",""
"uuid:29af0503-0d0e-4fb6-a116-ee28b618a7d9","http://resolver.tudelft.nl/uuid:29af0503-0d0e-4fb6-a116-ee28b618a7d9","WAQUA - Delft3D online morfologie koppeling: Eindrapport","Jagers, H.R.A.","","2005","","numerieke modellen; numerical modelling; computerprogramma's; software; riviermorfologie; river morphology","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:956ca27f-2a11-434f-8cfc-5fdd44c864aa","http://resolver.tudelft.nl/uuid:956ca27f-2a11-434f-8cfc-5fdd44c864aa","Sequence manager description in COSTA interface terminology","Serafy, G.Y. El; Hummel, S.","","2005","","numerieke modellen; numerical modelling; data-assimilatie; data assimilation; ontwerp; design","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:dad3797d-14ff-4cc6-9995-95233a6bc1a5","http://resolver.tudelft.nl/uuid:dad3797d-14ff-4cc6-9995-95233a6bc1a5","Voorspelinstrument duurzame vaarweg: Voorbereiding","Mosselman, E.; Sloff, C.J.; Jagers, H.R.A.","","2005","","riviermorfologie; river morphology; numerieke modellen; numerical modelling; scheepvaart; shipping; Rijn; Rhein; Waal","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:65aec9d1-a698-42f4-9ce5-28194af3ebf1","http://resolver.tudelft.nl/uuid:65aec9d1-a698-42f4-9ce5-28194af3ebf1","Bepaling golfdrukken met SKYLLA: Vergelijking van berekende resultaten met metingen","Kuiper, C.; Doorn, N.","","2005","","steenzettingen; stone pitchings; numerieke modellen; numerical modelling; dijken; dikes; golfbrekers; breakwaters; golfbelasting; wave load","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:4fda20a4-1010-4406-84f8-537d3c1c110a","http://resolver.tudelft.nl/uuid:4fda20a4-1010-4406-84f8-537d3c1c110a","Morphological modelling of the Western Scheldt: Validation of Delft3D","Kuijper, C.; Steijn, R.C.; Roelvink, J.A.; Kaaij, T. van der; Olijslagers, P.","","2004","","modelvalidatie; model validation; estuariene morfologie; estuarine morphology; numerieke modellen; numerical modelling","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:8a2aaa9c-5e88-4508-a2c0-4bc429e32bf1","http://resolver.tudelft.nl/uuid:8a2aaa9c-5e88-4508-a2c0-4bc429e32bf1","A long-term morphological model for the whole Dutch Coast: Part 1: model formulation - part 2: application of the model","Steetzel, H.J.; Wang, Z.B.","","2004","","numerieke modellen; numerical modelling; sedimenttransportformules; sediment transport formulae; getij-inlaten; tidal inlets; kustbeheer; coastal zone management; modelonderzoek; modelling","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:263e3065-b3e4-4747-bf86-7aff6b8e8005","http://resolver.tudelft.nl/uuid:263e3065-b3e4-4747-bf86-7aff6b8e8005","Verkenning seiches in WAQUA: Studie naar waterstandslingeringen in het IJsselmeergebied","Jong, M.P.C. de; Stolker, C.","","2004","","seiches; seiches; waterstanden; water levels; meren; lakes; opwaaiing; wind set up; IJsselmeergebied; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:974306ce-9940-426b-9d6a-b956551958f8","http://resolver.tudelft.nl/uuid:974306ce-9940-426b-9d6a-b956551958f8","Kader hydraulische analyse bovenrivierengebied: PKB-studie deelrapport A","Crebas, J.","","2003","","hydraulica; hydraulics; bovenrivieren; upper rivers; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:304fa85d-bc41-46d3-948c-0e91bd91a6ab","http://resolver.tudelft.nl/uuid:304fa85d-bc41-46d3-948c-0e91bd91a6ab","Numerical modelling of vanes and screens; development of vanes and screens in Delft3D-MOR","Flokstra, C.; Jagers, H.R.A.; Wiersma, F.E.; Mosselman, E.; Jongeling, T.H.G.","","2003","","bed vanes, screens; river morphology; river flow; river engineering; river management; numerical modelling","en","report","Delft Cluster","","","","","","","","","","","","",""
"uuid:b940c337-a6ba-4fdd-ac64-a6a9ee8d4125","http://resolver.tudelft.nl/uuid:b940c337-a6ba-4fdd-ac64-a6a9ee8d4125","The Hydro-Support: An Elasto-Hydrostatic Thrust Bearing with Mixed Lubrication","Van Ostayen, R.A.J.","Rixen, D.J. (promotor)","2002","The ""classic"" solution for the support of a translating lockgate, the wheelonrail support, has relatively high construction as well as inspection and maintenance costs. An alternative support which has previously been developed for use in the Prins WillemAlexander lock is the socalled ""hydrosupport"", a hydrostatic thrust bearing that slides on an elastic track and is connected to the lockgate by an elastic support. After a runningin period, this support shows low friction. In this thesis several methods to further improve this type of support have been studied. The direction of these improvements has been guided by the following observation: The typical dimensions and manufacturing standards of the bearing and the track are in conflict. On the large scale of a lockgate, a hydrostatic bearing typically requires sliding surfaces with a surface waviness smaller than 0.1 mm/m. However, the track can not be manufactured easily with a surface waviness smaller than typically 0.5 mm/m. This means that contact between the bearing and track will be inevitable. In this thesis, methods have been studied to use this contact in order to improve the performance (namely reduced flow rate and pumping power) of the hydrosupport. A mathematical model has been developed, incorporating the elastic deformation of the track, bearing and support, and the partial contact and hydrostatic lubricating film between the bearing and track. Several track waviness models have been developed, among others a random periodic surface waviness. Furthermore the concept of an ""ideal"" support has been introduced, which under compression exhibits a reaction pressure equal to the hydrostatic pressure in a lubricating film with a constant height. Not only has this mathematical model been developed in this thesis, it has also been implemented in a numerical program and used to test the influence of a number of design parameters on the performance of a hydrosupport. It has been shown that, using the contact between the sliding surfaces, the tilting stiffness of a bearing with 1 small recess is comparable to that of the 4-recess bearing. Additionally, a 1 recess bearing requires a smaller or even no restrictor and therefore a smaller supply pump. Furthermore, it has been shown that the hydrofender with its large length/width ratio has comparable or even better performance than the circular hydrofoot, while requiring a narrower track. In addition, it has been shown that, for a given load, a hydrofender with a small bearing thickness and with a standard elastic support design exhibits a smaller flow rate and larger bearing coefficient than a bearing with an ideal support design. Finally, using the results of these parametric studies, a procedure has been developed for the design of hydrosupports. This procedure has been used in two examples.","elasto-hydrostatic lubrication; mixed lubrication; bearing design; numerical modelling; finite element method","en","doctoral thesis","Ponsen & Looijen BV","","","","","","","","Design, Engineering and Production","","","","",""
"uuid:adb5ef04-f69b-49a3-8d41-f17678ad7241","http://resolver.tudelft.nl/uuid:adb5ef04-f69b-49a3-8d41-f17678ad7241","Improvement of Danube delta model","Hooijer, A.; Bakkum, R.C.J.","","2002","","numerieke modellen; numerical modelling; hydrodynamica; hydrodynamics; waterkwaliteit; water quality; estuaria; estuaries; Donau; Danube River","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:a33ed833-9e23-4098-8e98-f30341d23f0f","http://resolver.tudelft.nl/uuid:a33ed833-9e23-4098-8e98-f30341d23f0f","Morphology of pits, channels and trenches - part III: Investigation of the longshore and cross-shore impact of various pit designs","Rijn, L.C. van; Walstra, D.J.R.; Boer, G. de","","2002","","kustmorfologie; coastal morphology; zandwinning; sand dredging; numerieke modellen; numerical modelling; morfodynamica; morphodynamics","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:5247bd4a-29a0-4434-b169-b26ec36bd68a","http://resolver.tudelft.nl/uuid:5247bd4a-29a0-4434-b169-b26ec36bd68a","Controls on shallow-marine stratigraphy; a process-response approach","Storms, J.E.A.","Kroonenberg, S.B. (promotor)","2002","This thesis is concerned with the interface between land and sea. The interaction of coastal evolution and the sedimentary record, in this case of a wave-dominated coastal system, over geological timescales (< 105 y) is investigated in relation to their forcing parameters such as relative sea-level change, sediment supply, and wave climate. The preserved sediments record the dynamics of the coastal system in stacked but uncomplete sediment packages, which formed as the coastline migrated in landward or seaward direction resulting from erosion and deposition of sand and clay along the shallow parts of the coastal system (< 100 m waterdepth). If we want to understand coastal evolution over geological timescales, we must be able to read or interpret the stratigraphic record. Reconstructing coastal evolution from preserved shallow-marine stratigraphy is very difficult. The sediment record is not complete due to phases of erosion and we know little about past local changes in relative sea level, sediment supply, and wave climate. Also, the individual effects of these variables on coastal evolution and the stratigraphic record are poorly known. As the processes that drive coastal evolution, and therefore the resulting sedimentary record, act over thousands of years it is not possible to simply take measurements and make observations. Nevertheless, the stratigraphic record is the key to understand coastal evolution over geological timecales because it is the only physical evidence. Therefore a two dimensional numerical model has been developed which simulates the processes which are presumably important for coastal evolution and the formation of the stratigraphic record over long timescales. This model, its development and some applications are described in this thesis with the goal of increasing our understanding of coastal dynamics over geological timescales.","numerical modelling; shoreface; barrier island; progradation; transgression; sea-level change","en","doctoral thesis","","","","","","","","","Civil Engineering and Geosciences","","","","",""
"uuid:0f154350-46b9-452a-9b11-75103b60f574","http://resolver.tudelft.nl/uuid:0f154350-46b9-452a-9b11-75103b60f574","Numerical modelling of ship-induced water motions: Feasibility and validation study","Verheij, H.J.; Raven, H.C.; Doorn, N.; Borsboom, M.J.A.; Lambeek, J.J.P.","","2001","","stromingsmodellen; flow models; numerieke modellen; numerical modelling; golftheorie; wave theory","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:26e9cbb1-4b8b-4138-ae6e-200ed63645d2","http://resolver.tudelft.nl/uuid:26e9cbb1-4b8b-4138-ae6e-200ed63645d2","Beoordeling nieuwe overlaatroutines WAQUA","Kester, J.A.T.M. van","","2001","","energieverliezen; head losses; overlaten; spillways; rivierafvoer; discharge; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:75d667f6-7491-4c2c-8829-c3a2be581102","http://resolver.tudelft.nl/uuid:75d667f6-7491-4c2c-8829-c3a2be581102","Low-exceedance wave overtopping events: Estimates of wave overtopping parameters at the crest and landward side of dikes","van Gent, M.R.A.","","2001","","wave overtopping; wave run-up; dikes; coastal structures; shallow foreshores; breaching of dikes; water-layer thickness; velocities; numerical modelling; physical model tests","en","report","Delft Cluster","","","","","","","","","","","","",""
"uuid:011694ee-394b-44f5-9866-981513bdd780","http://resolver.tudelft.nl/uuid:011694ee-394b-44f5-9866-981513bdd780","A new vertical approximation for the numerical simulation of non-hydrostatic free surface flows","Stelling, G.S.; Kester, J.A.T.M. van","","2000","","hydrodynamica; hydrodynamics; interpolatie; interpolation; numerieke modellen; numerical modelling; golftheorie; wave theory","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:b9d225e6-2804-4fec-ac85-c510c7bd8880","http://resolver.tudelft.nl/uuid:b9d225e6-2804-4fec-ac85-c510c7bd8880","Numerical modelling of ship-induced water motions: Feasibility study","Verheij, H.J.; Raven, H.C.; Doorn, N.; Borsboom, M.J.A.","","2000","","stromingsmodellen; flow models; numerieke modellen; numerical modelling; golftheorie; wave theory","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:d55c64d3-1f45-4711-bc26-fe7c7f3f6cc5","http://resolver.tudelft.nl/uuid:d55c64d3-1f45-4711-bc26-fe7c7f3f6cc5","Randvoorwaarden in WAQUA en TRIWAQ: Syllabus workshop","Kester, J.A.T.M. van; Stelling, G.S.; Bijlsma, A.C.; Kaaij, T. van der","","2000","","ondiepwatervergelijkingen; shallow water equations; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:6c49bcf2-7a79-437d-9935-1c4e7513aff6","http://resolver.tudelft.nl/uuid:6c49bcf2-7a79-437d-9935-1c4e7513aff6","On the use of a horizontal k-e model for shallow-water flow","Bijvelds, M.D.J.P.; Goede, E.D. de","","2000","","turbulentieviscositeit; eddy viscosity; ondiep water; shallow water; numerieke modellen; numerical modelling","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:1b04609e-0408-485c-ba2a-d415f13c418c","http://resolver.tudelft.nl/uuid:1b04609e-0408-485c-ba2a-d415f13c418c","Uitbreiding Delft-FLS / koppeling met Sobek - deelrapport: Delft-1D2D systeemdocumentatie","Crebas, J.I.; Dhondia, J.F.","","1999","","computerprogramma's; software; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:4ded3e1f-ed2f-4e2f-ad65-b04a5e856f2e","http://resolver.tudelft.nl/uuid:4ded3e1f-ed2f-4e2f-ad65-b04a5e856f2e","Uitbreiding Delft-FLS / koppeling met Sobek - deelrapport: Delft-1D2D tests implementatie koppeling tussen Delft-FLS en Sobek Lowland","Lorenz, N.; Dhondia, J.F.; Kernkamp, H.W.J.; Laguzzi, M.M.","","1999","","dijkdoorbraken; dike breaches; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:2960591e-e975-4655-baa9-d9cb77ee8673","http://resolver.tudelft.nl/uuid:2960591e-e975-4655-baa9-d9cb77ee8673","Modification first-guess SWAN & Bench mark tests for SWAN","Ris, R.C.; Somers, C.M.G.","","1999","","golfmodellen; wave models; numerieke modellen; numerical modelling; numerieke analyse; numerical analysis; numerieke methoden en technieken; numerical methods and techniques","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:2ca9709b-2c80-4fb5-ba18-8e2bc21ababc","http://resolver.tudelft.nl/uuid:2ca9709b-2c80-4fb5-ba18-8e2bc21ababc","A review of the physical formulations in SWAN: Evaluation of the chosen formulations for the modelling of physical processes","Dingemans, M.W.","","1998","","golfrefractie; wave refraction; golfopwekking; wave generation; numerieke modellen; numerical modelling; golfvervorming; wave deformation","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:ed11cc74-a1fd-4745-a31c-00b5ab2af0bf","http://resolver.tudelft.nl/uuid:ed11cc74-a1fd-4745-a31c-00b5ab2af0bf","SOBEK hydrodynamic model Danube Delta, Romania: Report on technical assistance","Laguzzi, M.M.","","1997","","mariene hydrodynamica; marine hydrodynamics; numerieke modellen; numerical modelling; Donau; Danube River; Romania","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:aee8578e-c2bb-4813-95ea-b6ede55a44ab","http://resolver.tudelft.nl/uuid:aee8578e-c2bb-4813-95ea-b6ede55a44ab","Sediment transport and fluid mud flow: Physical mud properties and parameterization of vertical transport processes SILTMAN ; set-up of a POINT-MUD MODEL","Winterwerp, J.C.; Uittenbogaard, R.E.","","1997","","sedimenttransport in estuaria; sediment transport in estuaries; numerieke modellen; numerical modelling; sedimentconcentratie; sediment concentration; interne golven; internal waves","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:832ff86e-640f-41ec-a3cd-0cd6247c7ed4","http://resolver.tudelft.nl/uuid:832ff86e-640f-41ec-a3cd-0cd6247c7ed4","Kustlocatie: Morfologische berekeningen","Bosboom, J.; Aarninkhof, S.G.J.; Roelvink, J.A.; Walstra, D.J.R.","","1996","","kustmorfologie; coastal morphology; hydrodynamica; hydrodynamics; morfodynamica; morphodynamics; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:6a73f423-aa9e-4468-8a1e-3b7045d03920","http://resolver.tudelft.nl/uuid:6a73f423-aa9e-4468-8a1e-3b7045d03920","3D wave-current interaction: CL-vortex force, simulation of wave-flume experiments","Kester, J.A.T.M. van; Uittenbogaard, R.E.; Dingemans, M.W.","","1996","","numerieke modellen; numerical modelling; turbulentie; turbulence; wervelingen; vortices, swirls","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:91e600ce-2f9e-486f-8281-7e8715991ed5","http://resolver.tudelft.nl/uuid:91e600ce-2f9e-486f-8281-7e8715991ed5","Hamiltonian formulation of water waves, part 3: High-order description, wave breaking formulation, and numerical implementations","Dingemans, M.W.; Otta, A.K.","","1996","","numerieke modellen; numerical modelling; golfmodellen; wave models","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:c5120cfa-d332-4878-bb7a-aedae62d5603","http://resolver.tudelft.nl/uuid:c5120cfa-d332-4878-bb7a-aedae62d5603","Schaalrelaties: Nadere analyse schaalrelaties dwarstransport via formulering pragmatisch transportmodel","Steetzel, H.J.","","1996","","schaalmodellen; scale models; schaalregels; scaling rules; schaaleffecten; scale effects; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:954b1a19-b62e-42d0-8719-f60826b74ed3","http://resolver.tudelft.nl/uuid:954b1a19-b62e-42d0-8719-f60826b74ed3","3D-numerieke modellering gedeeltelijk geopende Haringvlietsluizen: Sluisformuleringen en testberekeningen voor implementatie in TRIWAQ KEPS02, fase 1","Kester, J.A.T.M. van; Stelling, G.S.","","1996","","Haringvliet; numerieke modellen; numerical modelling; zoutwaterindringing; salt water intrusion; stoftransport; mass transport; coordinatenstelsels; coordinate systems","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:9854e9be-4326-4f5a-a780-1787b89e89d5","http://resolver.tudelft.nl/uuid:9854e9be-4326-4f5a-a780-1787b89e89d5","AGRICOM gebruikershandleiding","Prinsen, G.F.; Verschuur, E.A.","","1995","","numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:834924ba-1835-482d-ad7c-6b0ed13c76f4","http://resolver.tudelft.nl/uuid:834924ba-1835-482d-ad7c-6b0ed13c76f4","3D temperatuurmodellering voor het Continental Shelf Model in TRIWAQ","Goede, E.D. de","","1995","","numerieke modellen; numerical modelling; temperatuur; temperature; numerieke methoden en technieken; numerical methods and techniques; Noordzee","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:daa64162-1ddc-4a07-a035-a5cac9c0d423","http://resolver.tudelft.nl/uuid:daa64162-1ddc-4a07-a035-a5cac9c0d423","Extension of the grazing module of the phytoplankton model BLOOM II","Vat, M.P. van der","","1995","","zooplankton; zooplankton; fytoplankton; phytoplankton; numerieke modellen; numerical modelling","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:dea5cec7-4098-404a-b273-fcf12aada406","http://resolver.tudelft.nl/uuid:dea5cec7-4098-404a-b273-fcf12aada406","Ultrasonic scattering from a hydraulic fracture: Theory, computation and experiment","Savic, M.","Ziolkowski, A.M. (promotor)","1995","","hydraulic fractures; ultrasonic monitoring; numerical modelling; finite-differences","en","doctoral thesis","","","","","","","","","Civil Engineering and Geosciences","","","","",""
"uuid:7e93ce77-475a-4462-ae6a-7af9ce07ba8e","http://resolver.tudelft.nl/uuid:7e93ce77-475a-4462-ae6a-7af9ce07ba8e","Danube Environmental Programme - Hron river basin pre-investment study: Water quality and Decision Support System (DSS) sub-project","","","1994","","Hron; waterkwaliteit; water quality; beleidsondersteuning; policy support; hydrologie; hydrology; numerieke modellen; numerical modelling","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:b36f7b47-f0b6-4483-94c7-fe1148ae2781","http://resolver.tudelft.nl/uuid:b36f7b47-f0b6-4483-94c7-fe1148ae2781","3D-numerieke modellering Haringvlietsluizen: Sluisformuleringen voor het Haringvlietcomplex en testberekeningen","Stelling, G.S.; Kester, J.A.T.M. van; Hulsen, L.J.M.","","1994","","Haringvliet; sluizen; sluices; numerieke modellen; numerical modelling; Zuid-Holland; riviermonden; river mouths","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:efc8b459-50d4-4f15-ad93-7e2ea363e4dc","http://resolver.tudelft.nl/uuid:efc8b459-50d4-4f15-ad93-7e2ea363e4dc","Een voorstudie naar mogelijke versnellingen van TRIWAQ","Goede, E.D. de; Stelling, G.S.","","1994","","numerieke modellen; numerical modelling; kwaliteitsbeheersing; quality control; riviermodellen; river models","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:25e68269-8a12-45ee-945c-e20df79a1e0b","http://resolver.tudelft.nl/uuid:25e68269-8a12-45ee-945c-e20df79a1e0b","SWITCH, a model for sediment-water exchange of nutrients (part 3): Reformulation and recalibration for Lake Veluwe","Smits, J.G.C.","","1994","","numerieke modellen; numerical modelling; sediment-water uitwisseling; sediment-water exchange; Veluwemeer; eutrofiering; eutrophication; nutrienten; nutrients; sedimenten; sediments","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:cab5abad-7743-47cd-a584-18068bb9abb9","http://resolver.tudelft.nl/uuid:cab5abad-7743-47cd-a584-18068bb9abb9","The Fatigue Behaviour of Multiplanar Tubular Joints","Romeijn, A.","","1994","Circular hollow sections are frequently used in structures subjected to fatigue loading such as bridges, offshore structures and cranes. These sections are generally connected by direct welding of the sections to each other. For the design of these welded connections, information is required on the fatigue behaviour. Especially for multiplanar connections, insufficient data is available regarding stress concentration factors (SCFs) which affect the fatigue life. Also, there is no standard for determining the fatigue strength of welded tubular joints. This has led to 3 divergence in the methods being used both experimentally as well as numerically. This publication presents the results of experimental and numerical research on the fatique strength of welded tubular joints. The research projects aim to provide guidelines and design recommendations on the fatigue strength of welded tubular joints, to be proposed for inclusion in international codes of practice such as Eurocode 3.","welded tubular joint; lattice girder; numerical modelling; fatigue; hot spot stress; uniplanar; multiplanar stress (strain) concentration factor","en","journal article","Delft University of Technology","","","","","","","","Civil Engineering and Geosciences","Structural Mechanics","","","",""
"uuid:79377d9a-b68f-47c5-a792-456a60555a20","http://resolver.tudelft.nl/uuid:79377d9a-b68f-47c5-a792-456a60555a20","Bresgroei - deel IV: Pragmatische modellering breedtegroei","Steetzel, H.J.","Rijkswaterstaat","1993","Het voorliggende onderzoek heeft tot doel inzicht te verschaffen in de wijze waarop het verloop van het instroomdebiet en de binnenwaterstand afhangen van de breedtegroei van de bres. De resultaten van deze verkenning geven aan in hoeverre (of en zoja, met welke middelen) nader onderzoek naar het proces van bresgroei gewenst is en wat de optimale invulling ervan is. Na een nadere karakterisering van het breedtegroeiproces is een onderverdeling gegeven in verschillende te onderkennen fasen. Vervolgens is, voor een situatie met constante buitenwaterstand, een analytische oplossing gegeven voor de ontwikkeling van respectievelijk de bresbreedte, het bresdebiet en de binnenwaterstand. Hieruit kan de gevoeligheid van de bresgroeisnelheid op bijvoorbeeld de uiteindelijke breedte van het gat en de totale tijdsduur worden afgeschat. Implementatie van de basisformuleringen in een eenvoudig mathematisch model (BREACHlD) maakt het doorrekenen van de ontwikkelingen voor een niet-constante buitenconditie mogelijk. Hiermee zijn voor het geval van een fictieve polder enkele verkennende berekeningen uitgevoerd waarbij de te verwachte spreiding in het resultaten is gerelateerd aan de onbekendheid met het onderliggende proces van bresgroei. Bij deze interpretatie zijn ook de resultaten van berekeningen met het RAMP-model van de DWW betrokken.","dijkdoorbraken; dike breaches; waterkeringen; flood protection works; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:316f7093-8cba-41dc-852f-47e51c343c91","http://resolver.tudelft.nl/uuid:316f7093-8cba-41dc-852f-47e51c343c91","Invers sedimenttransportmodel: Ontwerp","Koster, A.W.J.; Boogaard, H.F.P. van den","","1993","","sedimenttransportmodellen; sediment transport models; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:d63f03f7-9a9f-4492-9934-13427d01aa7a","http://resolver.tudelft.nl/uuid:d63f03f7-9a9f-4492-9934-13427d01aa7a","Invers sedimenttransportmodel: Definitiestudie","Koster, A.W.J.; Boogaard, H.F.P. van den","","1993","","sedimenttransportmodellen; sediment transport models; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:22a10630-1d75-4bf2-b03b-78cb7ea11cff","http://resolver.tudelft.nl/uuid:22a10630-1d75-4bf2-b03b-78cb7ea11cff","Fysisch validatie CLODES","Akkerman, G.J.","","1993","","numerieke modellen; numerical modelling; afsluitdammen; closure dams; bodemverdediging; bed protection; stortsteen; rubble; stroomsnelheidsmeting; current velocity measurement; drempels; bars; sluitgatdichting; gap closure","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:f3d4362f-01e0-4666-b309-f84bb18178bc","http://resolver.tudelft.nl/uuid:f3d4362f-01e0-4666-b309-f84bb18178bc","Morphodynamic response of a tidal inlet after a reduction in basin area: Numerical simulation of hydro- and morphodynamics of the mesotidal inlet ""Het Friesche Zeegat""","Steijn, R.C.; Hartsuiker, G.","","1992","","hydrodynamica; hydrodynamics; simulatie; simulation; kustmorfologie; coastal morphology; numerieke modellen; numerical modelling; Waddenzee; getij-inlaten; tidal inlets","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:bcb47286-6371-4645-b9ac-0a25cdcb448f","http://resolver.tudelft.nl/uuid:bcb47286-6371-4645-b9ac-0a25cdcb448f","Study of bedform geometry in large rivers","Julien, P.Y.","","1992","","numerieke modellen; numerical modelling; Rijn; Rhein; rivieren; rivers; duinen; dunes; hoogwaterafvoer; flood discharge; beddingvormen; bed forms; Maas; Meuse","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:f13f88b3-5aa3-4cbf-a625-c1f29689121b","http://resolver.tudelft.nl/uuid:f13f88b3-5aa3-4cbf-a625-c1f29689121b","Belasting van de Nederlandse bodem met meststoffen, ten behoeve van de voor de Commissie Stikstof uitgevoerde landelijke berekeningen van de stikstofuit- en afspoeling vanuit de landbouw","Menke, M.A.","","1992","","bodemverontreiniging; soil pollution; Nederland; numerieke modellen; numerical modelling; stikstof; nitrogen; mest; manure; bodembescherming; soil protection","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:00e23f2e-ff93-4fa3-b0ed-16f01b5f78bc","http://resolver.tudelft.nl/uuid:00e23f2e-ff93-4fa3-b0ed-16f01b5f78bc","Morphological modelling in estuaries and tidal inlets, part 1: Literature survey","Karssen, B.; Wang, Z.B.","","1991","","kustmorfologie; coastal morphology; numerieke modellen; numerical modelling; literatuuronderzoek; literature searching; estuariummodellen; estuary models; getij-inlaten; tidal inlets","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:fcca68a0-ba74-4e70-b896-7f3b23d3748c","http://resolver.tudelft.nl/uuid:fcca68a0-ba74-4e70-b896-7f3b23d3748c","SWITCH, a model for sediment-water exchange of nutrients (part 1+2): Formulation ; calibration, application for Lake Veluwe","Smits, J.G.C.","","1991","","numerieke modellen; numerical modelling; sediment-water uitwisseling; sediment-water exchange; Veluwemeer; eutrofiering; eutrophication; nutrienten; nutrients; sedimenten; sediments","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:fcb2800e-be28-428a-82e0-ca60358c96f6","http://resolver.tudelft.nl/uuid:fcb2800e-be28-428a-82e0-ca60358c96f6","Uniformering van WAQUA rekenroutines inclusief droogvallen en weer onderlopen","Stelling, G.S.","","1991","","numerieke modellen; numerical modelling; computerprogramma's; software; stromingsvergelijkingen; flow equations","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:bea91ea5-2cd0-48f6-bc56-3e9ef4c4d5a3","http://resolver.tudelft.nl/uuid:bea91ea5-2cd0-48f6-bc56-3e9ef4c4d5a3","Morphodynamic modelling for a tidal inlet in the Wadden Sea: ""Het Friesche Zeegat""","Wang, Z.B.","","1991","","kustmorfologie; coastal morphology; getij-inlaten; tidal inlets; numerieke modellen; numerical modelling; Waddenzee; Friesland","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:c31f6d9e-bf26-4550-b062-163e720223d0","http://resolver.tudelft.nl/uuid:c31f6d9e-bf26-4550-b062-163e720223d0","DELWAQ-SLIB-2Dv programmalijn: Stand van zaken medio 1990","Hulsen, L.J.M.","","1990","","numerieke modellen; numerical modelling; slibtransport; mud transport","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:28fc6192-ed2a-4f19-b234-3ab9eb3ed97d","http://resolver.tudelft.nl/uuid:28fc6192-ed2a-4f19-b234-3ab9eb3ed97d","De storm van 1953 gesimuleerd met het Continental Shelf Model","Gerritsen, H.; Ronde, J.G. de","","1989","","stormvloeden; storm surges; simulatie; simulation; numerieke modellen; numerical modelling; North Sea; Zeeland","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:98eded3d-95df-4a0b-a2a4-be4029a08a73","http://resolver.tudelft.nl/uuid:98eded3d-95df-4a0b-a2a4-be4029a08a73","Investigation of surge-tide interaction in the storm surge model CSM-16","Bijlsma, A.C.; Bruinsma, R.; Vatvani, D.K.","","1989","","stormvloeden; storm surges; numerieke modellen; numerical modelling; North Sea; getijden; tides; getijvoorspelling; tide prediction","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:345548c4-b077-4c57-a605-c66b648f4712","http://resolver.tudelft.nl/uuid:345548c4-b077-4c57-a605-c66b648f4712","Zand-watermengselstromingen - het storten van zand onder water, 6: Wiskundig model terras-vormig stort","Mastbergen, D.R.","","1989","","numerieke modellen; numerical modelling; zand-watermengsels; sand slurries","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:90d4f48f-20c8-4c59-8eb8-924042ab434e","http://resolver.tudelft.nl/uuid:90d4f48f-20c8-4c59-8eb8-924042ab434e","Zuurstofmodel Westerschelde","Ouboter, M.R.L.; Gils, J.A.G. van","","1988","","estuaria; estuaries; numerieke modellen; numerical modelling; Zeeland; Westerschelde; stikstof; nitrogen; zuurstof; oxygen","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:ee1211e7-3b12-430c-99e9-b0bf2db295a8","http://resolver.tudelft.nl/uuid:ee1211e7-3b12-430c-99e9-b0bf2db295a8","Verification of numerical wave propagation models with laboratory measurements: HISWA verification in the directional wave basin","Dingemans, M.W.","Deltares","1987","","golfvoortplanting; numerical modelling; numerieke modellen; wave propagation","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:daf20034-7990-4ad9-9f44-3a8e9f85880a","http://resolver.tudelft.nl/uuid:daf20034-7990-4ad9-9f44-3a8e9f85880a","Schepen in dwarsstroom: Wiskundig gevoeligheidsonderzoek (samenvatting)","","","1986","","scheepsmanoeuvres; ship manoeuvres; scheepsbewegingen; ship motions; dwarsstroming; transverse flow; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:8c5f7e95-ffd1-48fe-aa5a-67add49c6000","http://resolver.tudelft.nl/uuid:8c5f7e95-ffd1-48fe-aa5a-67add49c6000","The phytoplankton-nutrient model SEAWAQ and its application to the southern bight of the North Sea: Report on investigations","Verhagen, J.H.G.","Deltares","1985","","ecosystemen; ecosystems; fytoplankton; Noordzee; numerical modelling; numerieke modellen; nutrienten; nutrients; phytoplankton","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:88ab5204-6191-493e-99dc-b24d25a4ff17","http://resolver.tudelft.nl/uuid:88ab5204-6191-493e-99dc-b24d25a4ff17","BLOOM II: A mathematical model to compute phytoplankton blooms : user's manual : release 2","Bigelow, J.H.","Deltares","1985","","fytoplankton; limnological models; limnologische modellen; numerical modelling; numerieke modellen; phytoplankton","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:d5269b0b-d42a-4127-a48c-d68dd7bfd6b7","http://resolver.tudelft.nl/uuid:d5269b0b-d42a-4127-a48c-d68dd7bfd6b7","Deiningsvoorspelling m.b.v. ARMAX modellen ter ondersteuning van het toelatingsbeleid voor de Euro-Maasgeul en van de werkbaarheidsverwachtingen in de Oosterschelde","Poulisse, H.N.J.","Deltares","1985","","deining; golfenergie; golfvoorspelling; numerical modelling; numerieke modellen; swell; wave energy; wave forecasting","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:81f29778-a3b5-4578-99de-7217b452907e","http://resolver.tudelft.nl/uuid:81f29778-a3b5-4578-99de-7217b452907e","Coastal morphology: Flow formulation in mathematical models of 2DH morphological changes","Vriend, H.J. de","","1985","","kustmorfologie; coastal morphology; numerieke modellen; numerical modelling","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:ab9477fc-19e6-4d29-a6ea-4f4a983af299","http://resolver.tudelft.nl/uuid:ab9477fc-19e6-4d29-a6ea-4f4a983af299","Compartimentering Oosterschelde: Berekening snelheidsvertikalen bij zandsluitingsfasen : notitie berekeningen","Hartsuiker, G.","Deltares","1985","","closure (by dumping); geleidelijke sluiting; numerical modelling; numerieke modellen; Zeeland","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:23ded1d3-d9e7-4e09-b7fd-7a5ab3edfdee","http://resolver.tudelft.nl/uuid:23ded1d3-d9e7-4e09-b7fd-7a5ab3edfdee","Haalbaarheidsstudie naar de modellering van zware metalen met het model CHARON door toepassing op het systeem Ketelmeer-IJsselmeer","Stutterheim, E.; Smits, J.G.C.","","1985","","zware metalen; heavy metals; numerieke modellen; numerical modelling; waterverontreiniging; water pollution; IJsselmeer; Ketelmeer","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:480c65c8-5c94-401a-b1db-75a77734af3f","http://resolver.tudelft.nl/uuid:480c65c8-5c94-401a-b1db-75a77734af3f","The influence of nutrient availability on the ecosystem behaviour of Lake Grevelingen: Report on investigations","Vries, I. de","Deltares","1984","","limnological models; limnologische modellen; numerical modelling; numerieke modellen; nutrienten; nutrients; Zeeland","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:69082fd5-6646-46c2-835b-739930235aa2","http://resolver.tudelft.nl/uuid:69082fd5-6646-46c2-835b-739930235aa2","Stormvloedkering Oosterschelde: Modellering lokale golfvariaties rond de kering","Deelen, C.","Deltares","1984","","golfmodellen; golfvoorspelling; numerical modelling; numerieke modellen; Oosterschelde; wave forecasting; wave models; Zeeland","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:81dea395-d3f9-4918-8eb8-d9fd8e13a2e4","http://resolver.tudelft.nl/uuid:81dea395-d3f9-4918-8eb8-d9fd8e13a2e4","Fundamenteel onderzoek naar voorspellen van ontgrondingen: Voorstel voor voortgezet onderzoek","Wijngaarden, N.J. van","Deltares","1984","","numerical modelling; numerieke modellen; ontgronding door uitstroming; ontgrondingsmodellen; outflow induced scour; scour models","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:87b1d5e2-7367-49ef-a65a-39ef29d160c7","http://resolver.tudelft.nl/uuid:87b1d5e2-7367-49ef-a65a-39ef29d160c7","A Numerical Model for Flow and Sediment Transport in Alluvial-River Bends","Nakato, T.; Kennedy, J.F.; Vadnal, J.L.","TU Delft","1983","The principal features of the numerical model developed herein for calculation of flow and sediment-transport distributions in alluvial-river bends may be summarized as follows: i. The secondary-flow strength and the bed topography are uncoupled from the calculation of distributions of lateral shift velocity and streamwise velocity. This is accomplished by, first, calculating the secondary-flow strength on the basis of conservation of flux of moment-of-momentum, and, second, determining the bed topography on the basis of radial force equilibrium of the moving bed layer. ii. The distributions of lateral shift velocity and depth-averaged streamwise velocity are calculated, for the warped channel determined as described in step i above, from the depth-integrated equations expressing conservation of mass and momentum. It was concluded that for flows which satisfy (24), it is not necessary to include the third conservation equation, that for radial-direction momentum, or to iterate among three equations to obtain a solution. The numerical scheme utilizes the backward finite-difference method, and evaluates transverse and streamwise distributions of the radial mass-shift velocity and the depth-averaged streamwise velocity. Numerical simulations utilizing the model developed were made for one laboratory flow, two Sacramento River flows, and three different idealized channel bends. The principal conclusions obtained from the simulations are as follows: i. Generally satisfactory agreement between computed and measured results was obtained by utilizing error tolerances of E_U and E_V of 2% and 0.2%, respectively. In the absence of better information, it is recommended that alpha = 1.00 and beta = 3.50 be utilized. In instances where actual field data are available on the rate of development and equilibrium values of S_T, alpha and beta should be adjusted on the basis of the data. ii. The most cost-effective square-grid size is approximately equal to the mean flow depth. iii. The computer program is capable of simulating flow in multiple-bend channels with stepwise-varying radius of curvature. On the basis of the numerical simulations, it was found that the maximum permissible stepwise change of centerline curvature for which the program will run is about 2.5% in the case of increasing Rc and about 10% for decreasing Rc.","numerical modelling; sediment transport; alluvial river; river bend; modelling","en","report","Iowa Institute of Hydraulic Research","","","","","","","","","","","","",""
"uuid:ecd9504e-ff41-46ee-aa96-6ac240b54b8a","http://resolver.tudelft.nl/uuid:ecd9504e-ff41-46ee-aa96-6ac240b54b8a","Kustmorfologie: Numeriek model voor het berekenen van kustlijnveranderingen onder invloed van getij- en golfgedreven stroming (n-lijn model)","Boer, S.","","1983","","kustmorfologie; coastal morphology; kustlijnontwikkeling; coastline development; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:640b88d7-3178-4a23-9be7-64646a0b2ce8","http://resolver.tudelft.nl/uuid:640b88d7-3178-4a23-9be7-64646a0b2ce8","Verification of numerical wave propagation models with field measurements: CREDIZ verification Haringvliet","Dingemans, M.W.","Deltares","1983","","golfvoortplanting; Haringvliet; numerical modelling; numerieke modellen; site surveying; veldonderzoek; wave propagation","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:618ddf5b-19eb-4f33-b697-defc8bfc6601","http://resolver.tudelft.nl/uuid:618ddf5b-19eb-4f33-b697-defc8bfc6601","Stormvloedkering Oosterschelde: Ervaringen met het uitvoeren van WAQUA-berekeningen op de Univac : notitie","Hartsuiker, G.","Deltares","1983","","flow patterns; numerical modelling; numerieke modellen; storm surge barriers; stormvloedkeringen; stroombeelden; Zeeland","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:283d08f1-da6d-4b0f-97c1-0c6bfe202f2b","http://resolver.tudelft.nl/uuid:283d08f1-da6d-4b0f-97c1-0c6bfe202f2b","Compartimentering Oosterschelde: Modellering stroombeeld in het sluitgat van het Markiezaat met behulp van WAQUA-modellen : DOOS3-model : notitie berekeningen","Hartsuiker, G.","Deltares","1983","","closure gaps; flow patterns; numerical modelling; numerieke modellen; sluitgaten; stroombeelden; Zeeland","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:33aea2a6-2f85-4c93-8b27-4407540a2681","http://resolver.tudelft.nl/uuid:33aea2a6-2f85-4c93-8b27-4407540a2681","Kustmorfologie: Stand van zaken betreffende het KC/KL programma","Tilmans, W.M.K.","","1983","","kustmorfologie; coastal morphology; kustlijnontwikkeling; coastline development; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:32baa713-95e2-4fdf-a6ed-d4be429d0721","http://resolver.tudelft.nl/uuid:32baa713-95e2-4fdf-a6ed-d4be429d0721","Toetsing van het computerprogramma ZANTRI aan een hydraulisch onderzoek voor onttrekking van water","Kerssens, P.J.M.A.","","1983","","numerieke modellen; numerical modelling; bodemligging; bed level","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:2097590e-8286-4949-aebb-36919a2080cc","http://resolver.tudelft.nl/uuid:2097590e-8286-4949-aebb-36919a2080cc","Kustmorfologie: Bodemliggingsontwikkeling bij quasi-stationaire tweedimensionale horizontale stroming: analyse","Vriend, H.J. de.","","1983","","kustmorfologie; coastal morphology; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:6163189a-652f-48c0-9d13-1a476be2ecef","http://resolver.tudelft.nl/uuid:6163189a-652f-48c0-9d13-1a476be2ecef","Een getijberekening voor de zuidelijke Noordzee met verschillende numerieke modellen: Vergelijking van de resultaten","Verboom, G.K.","","1982","","getijberekening; tidal computation; numerieke modellen; numerical modelling; Noordzee","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:5ca5f069-9ee3-4a10-bd77-d1069c5d0b30","http://resolver.tudelft.nl/uuid:5ca5f069-9ee3-4a10-bd77-d1069c5d0b30","Mathematical simulation of algae blooms by the model BLOOM II: Report on investigations","Los, F.J.","Deltares","1982","","algae; algen; limnological models; limnologische modellen; numerical modelling; numerieke modellen; plankton; plankton; Zeeland","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:28dfac74-d940-46ae-8982-aff81a07640a","http://resolver.tudelft.nl/uuid:28dfac74-d940-46ae-8982-aff81a07640a","Mathematisch-fysische en numeriek-wiskundige problemen in TOW-B: Een inventarisatie en voorstel van onderzoek","Verboom, G.K.; Os, A.G. van","","1982","","sedimenttransportprocessen; sediment transport processes; stromingsmodellen; flow models; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:52467c5c-786b-4b1c-b684-37d69996136c","http://resolver.tudelft.nl/uuid:52467c5c-786b-4b1c-b684-37d69996136c","Waterkwaliteitsmodel IJsselmeer: Onderzoek naar de invloed van een aantal mogelijke beheersmaatregelen op de eutrofiëring van het IJsselmeer","Rooij, N.M. de; Smits, J.G.C.; Los, F.J.; Stans, J.C.; Groot, B.G. de; Klomp, R.","","1982","","waterkwaliteit; water quality; nutrienten; nutrients; algen; algae; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:6814d2bf-fc1b-45f6-8523-9334910aae2e","http://resolver.tudelft.nl/uuid:6814d2bf-fc1b-45f6-8523-9334910aae2e","Zoutindringing achter schutsluizen: Toepassing TWOLAY voor prototype situaties","Moser, G.M.","Deltares","1982","","locks; numerical modelling; numerieke modellen; salt water intrusion; schutsluizen; zoutwaterindringing","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:b1393b3c-630b-45d2-8f4c-e5f1b3a6aa6d","http://resolver.tudelft.nl/uuid:b1393b3c-630b-45d2-8f4c-e5f1b3a6aa6d","Computation of density currents in estuaries: Calibration and verification in a branched tidal flume","Karelse, M.; Perrels, P.A.J.","","1982","","numerieke modellen; numerical modelling; dichtheidsstroming; density induced flow; estuaria; estuaries; modelonderzoek; modelling","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:8286c92d-3d0c-44ad-bb1f-3d037981d2de","http://resolver.tudelft.nl/uuid:8286c92d-3d0c-44ad-bb1f-3d037981d2de","Kalamiteuze lozingen in het stroomgebied van de Rijn: Verslag onderzoek","Luteijn, J.J.; Pagee, J.A. van.","","1982","","rivierbeheer; river management; rivierverontreiniging; river pollution; lozingen; spills; numerieke modellen; numerical modelling; Rijn; Rhein; Nederland","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:7faea55b-2a80-42ae-90fc-8176be4b7073","http://resolver.tudelft.nl/uuid:7faea55b-2a80-42ae-90fc-8176be4b7073","Reststroomonderzoek in Oosterschelde-getijmodel","Karelse, M.","Deltares","1982","","afvalwaterverspreiding; numerical modelling; numerieke modellen; Oosterschelde; residual currents; reststromen; waste water dispersion; Zeeland","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:175f97b8-7bae-4c8d-94d9-829e9fe73ec6","http://resolver.tudelft.nl/uuid:175f97b8-7bae-4c8d-94d9-829e9fe73ec6","TWOLAY impliciet: Een eendimensionaal tweelagenmodel : modelbeschrijving en resultaten nauwkeurigheidsonderzoek","Moder, G.M.","Deltares","1982","","accuracy; hydraulic research; hydraulisch onderzoek; locks; nauwkeurigheid; numerical modelling; numerieke modellen; salt water intrusion; schutsluizen; zoutwaterindringing","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:bee04ef0-9ff3-454f-8e15-937a8819b3c9","http://resolver.tudelft.nl/uuid:bee04ef0-9ff3-454f-8e15-937a8819b3c9","Zoutindringing achter schutsluizen: Fysisch testen van het impliciete model TWOLAY (getijgootomstandigheden)","Moser, G.M.","Deltares","1982","","locks; model calibration; modelijking; numerical modelling; numerieke modellen; salt water intrusion; schutsluizen; zoutwaterindringing","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:b6771eef-5e2c-49e6-9074-ae87ef87250c","http://resolver.tudelft.nl/uuid:b6771eef-5e2c-49e6-9074-ae87ef87250c","Waterkwaliteitsmodel Hollandsch Diep / Haringvliet: Voorspelling toekomstige waterkwaliteit bij het meetpunt H9","Stans, J.C.","Deltares","1981","","numerical modelling; numerieke modellen; waterkwaliteitsmodellen; water quality models; Zeeland","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:5e8c78b0-ab9f-4546-8acd-acaf6253ccf8","http://resolver.tudelft.nl/uuid:5e8c78b0-ab9f-4546-8acd-acaf6253ccf8","Verificatie van numeriek 2D (vertikaal)-model DISTRO aan getijgootmetingen: Verslag wiskundig onderzoek","Karelse, M.","Deltares","1981","","calibration; dispersie; dispersion; gelaagdheid; ijking; numerical modelling; numerieke modellen; stratification; turbulence models; turbulentiemodellen","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:20a4803d-d0f0-48b1-90cf-a1fe12f04900","http://resolver.tudelft.nl/uuid:20a4803d-d0f0-48b1-90cf-a1fe12f04900","Wiskundige waterbewegingsmodellen in het advieswerk voor havens en kusten","Vreugdenhil, C.B.; Wind, H.G.","","1981","","kuststromen; littoral currents; numerieke modellen; numerical modelling","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:601842cc-99a2-4aa4-bc26-710548c71c7b","http://resolver.tudelft.nl/uuid:601842cc-99a2-4aa4-bc26-710548c71c7b","Getijgootonderzoek: Invloed dwarsmiddeling op grootte van dispersietransporten in 2D (vertikaal)-beschrijving","Karelse, M.","Deltares","1981","","diffusiecoefficient; diffusivity; dispersie; dispersion; exchange flow; mass transport; numerical modelling; numerieke modellen; salt water intrusion; stoftransport; uitwisseling; zoutwaterindringing","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:32386108-bda1-4b55-b2db-f42f3031756d","http://resolver.tudelft.nl/uuid:32386108-bda1-4b55-b2db-f42f3031756d","Kooldioxide en water: Reakties en transport verschijnselen","Rooij, N.M. de","Deltares","1981","","fytoplankton; limnological models; limnologische modellen; numerical modelling; numerieke modellen; phytoplankton","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:97a0581b-0030-4a36-88b8-3ea43dd6523f","http://resolver.tudelft.nl/uuid:97a0581b-0030-4a36-88b8-3ea43dd6523f","Storm surge barrier Oosterschelde - computation of siltation in dredged trenches: Mathematical model","","Deltares","1980","","aanzanding; channels; geulen; numerical modelling; numerieke modellen; Oosterschelde; sedimentatie; sedimentation; sedimentation of sand; sedimenttransportmodellen; sediment transport models","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:861b8003-d3ea-48a7-ba65-4dbfa37538ce","http://resolver.tudelft.nl/uuid:861b8003-d3ea-48a7-ba65-4dbfa37538ce","Kustmorfologie: Inventarisatie van numerieke modellen voor de berekening van kustontwikkelingen","Boer, S.; Tilmans, W.M.K.","","1980","","kustmorfologie; coastal morphology; kustlijnontwikkeling; coastline development; numerieke modellen; numerical modelling; kusttransport; littoral transport","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:aa4e15d7-c397-4305-a84a-4ebe155251d1","http://resolver.tudelft.nl/uuid:aa4e15d7-c397-4305-a84a-4ebe155251d1","Zoutindringing achter schutsluizen: Wiskundig modelonderzoek (impliciet model TWOLAY)","Roelfzema, A.","Deltares","1980","","locks; numerical modelling; numerieke modellen; salt water intrusion; schutsluizen; zoutwaterindringing","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:ecd35cd9-648b-41f6-b136-b45624f82edc","http://resolver.tudelft.nl/uuid:ecd35cd9-648b-41f6-b136-b45624f82edc","Getijgootonderzoek: Onderzoek met bodemruwheid ter verifikatie van tweedimensionaal numeriek zoutindringingsmodel - deel B : zout-zoet proeven","Karelse, M.","Deltares","1979","","bed roughness; bodemruwheid; current velocity measurement; dispersie; dispersion; getijmodellen; numerical modelling; numerieke modellen; salt water intrusion; stroomsnelheidsmeting; tidal models; zoutwaterindringing","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:bd24b7d6-cbef-4c19-8571-82043ef662f5","http://resolver.tudelft.nl/uuid:bd24b7d6-cbef-4c19-8571-82043ef662f5","Zoutindringing achter schutsluizen: Getijgootonderzoek en wiskundig modelonderzoek (expliciet model)","Roelfzema, A.","Deltares","1979","","gelaagdheid; locks; modelling; modelonderzoek; numerical modelling; numerieke modellen; salt water intrusion; schutsluizen; stratification; zoutwaterindringing","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:d5d9c6b8-d8da-4726-abdc-f43bb627b741","http://resolver.tudelft.nl/uuid:d5d9c6b8-d8da-4726-abdc-f43bb627b741","Getijgootonderzoek: Onderzoek met bodemruwheid ter verifikatie van tweedimensionaal numeriek zoutindringingsmodel - deel A : homogene proeven","Karelse, M.","Deltares","1979","","bed roughness; bodemruwheid; current velocity measurement; dispersie; dispersion; getijmodellen; numerical modelling; numerieke modellen; salt water intrusion; stroomsnelheidsmeting; tidal models; zoutwaterindringing","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:1aa59eb3-5596-4633-bbd2-cbdc35feb6c6","http://resolver.tudelft.nl/uuid:1aa59eb3-5596-4633-bbd2-cbdc35feb6c6","Ontwikkeling van een statistisch model en toepassing ervan op enkele waterkwaliteitsparameters uit het Hollands Diep en Haringvliet","Groot, S.","Deltares","1979","","Haringvliet; Hollandsch Diep; numerical modelling; numerieke modellen; waterkwaliteit; water quality; Zuid-Holland","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:eecf8b45-6ac0-4078-b507-2e21dfc10ecb","http://resolver.tudelft.nl/uuid:eecf8b45-6ac0-4078-b507-2e21dfc10ecb","Getijgootonderzoek: Projektenbeschrijving","Dronkers, J.","Deltares","1978","","density induced flow; dichtheidsstroming; getijden; getijrivieren; numerical modelling; numerieke modellen; salinity; tidal rivers; tides; zoutgehalte","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:cf1eda64-b617-4c58-99b6-e1f924f3a4af","http://resolver.tudelft.nl/uuid:cf1eda64-b617-4c58-99b6-e1f924f3a4af","Stormvloedkering Oosterschelde: Belasting op putten ten gevolge van grondwaterstroming","Vis, F.C.","Deltares","1978","","bouwputten; construction pits; grondwaterstroming; groundwater flow; hydrodynamic load; hydrodynamische belasting; numerical modelling; numerieke modellen","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:daa2996d-32d4-4cfe-8ce5-04b4ec9c5697","http://resolver.tudelft.nl/uuid:daa2996d-32d4-4cfe-8ce5-04b4ec9c5697","Getijgootonderzoek: Eendimensionale numerieke berekening van getijbeweging en zoutverdeling in de getijgoot","Karelse, M.","Deltares","1978","","dispersie; dispersion; numerical modelling; numerieke modellen","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:9bcf53f2-5b2c-4bdc-9d4f-b97ccb304595","http://resolver.tudelft.nl/uuid:9bcf53f2-5b2c-4bdc-9d4f-b97ccb304595","Zuurstofmodel Zoommeer tijdens ontzilting: Verslag onderzoek","Pagee, J.A. van","Deltares","1978","","anaerobie; anaeroby; numerical modelling; numerieke modellen; oxygen; Zeeland; zuurstof","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:f10b8fdf-c73d-416d-8a85-29fa6c2aa022","http://resolver.tudelft.nl/uuid:f10b8fdf-c73d-416d-8a85-29fa6c2aa022","Computations of a freshwater disposal into the Eastern Scheldt estuary","Perrels, P.A.J.","Deltares","1978","","estuaria; estuaries; numerical modelling; numerieke modellen; Oosterschelde; salt-freshwater mixing zone; turbulente menging; turbulent mixing; zout-zoetovergang","en","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:fe186550-5b76-4391-8b48-bfcf81526921","http://resolver.tudelft.nl/uuid:fe186550-5b76-4391-8b48-bfcf81526921","Zout-zoet problematiek Oosterschelde: Onderzoek naar de tijdschaal van verandering van de zoutverdeling bij sluiting van de stormvloedkering","Karelse, M.","Deltares","1978","","closure gaps; density induced flow; dichtheidsstroming; menging; mixing; numerical modelling; numerieke modellen; Oosterschelde; Philipsdam; salinity; sluitgaten; zoutgehalte","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:9d156211-6f20-4016-a917-4516cf9dcb80","http://resolver.tudelft.nl/uuid:9d156211-6f20-4016-a917-4516cf9dcb80","Evaluatie van de nota's 73-08 en 74-09 van de projektgroep Hollands Diep-Haringvliet en enkele algemene beschouwingen over het toepassen van massabalansen","","Deltares","1977","","Haringvliet; Hollandsch Diep; numerical modelling; numerieke modellen; waterkwaliteit; water quality; Zuid-Holland","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:57f3b4fb-ef09-455f-b451-7987335758b8","http://resolver.tudelft.nl/uuid:57f3b4fb-ef09-455f-b451-7987335758b8","Programma voor getijgootonderzoek","Karelse, M.","Deltares","1976","","density induced flow; dichtheidsstroming; gelaagdheid; menging; mixing; numerical modelling; numerieke modellen; stratification","nl","report","Deltares (WL)","","","","","","","","","","","","",""
"uuid:7d49a031-2353-466d-9a23-bd094312259e","http://resolver.tudelft.nl/uuid:7d49a031-2353-466d-9a23-bd094312259e","Een planktonproduktie model toegepast op het Brielse Meer: Verslag wiskundig onderzoek","Verhagen, J.H.G.","Deltares","1974","","ecological models; ecologische modellen; numerical modelling; numerieke modellen; plankton; plankton","en","report","Deltares (WL)","","","","","","","","","","","","",""