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Kramer, O.J.I. (author), van Schaik, C. (author), Dacomba Torres, P.D.R. (author), de Moel, P.J. (author), Boek, E.S. (author), Baars, E.T. (author), Padding, J.T. (author), van der Hoek, J.P. (author)Granular activated carbon (GAC) filtration is an important unit operation in drinking water treatment. GAC filtration is widely used for its filtration and adsorption capabilities as a barrier for undesired organic macro- and micro-pollutants. GAC filtration consists of two successive phases: adsorption and filtration, capturing the impurities...journal article 2021
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Hein, C.M. (author)The introduction to this thematic issue on port city porosity sets the stage for the study of port city territories as a particular type of space, located at the edge of land and sea, built, often over centuries, to facilitate the transfer of goods, people, and ideas. It argues that the concept of porosity can help conceptualize the ways in...contribution to periodical 2021
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Höller, L. (author)The great number of actors in port city regions, such as port authorities, municipalities, national governments, private companies, societal groups, and flora and fauna, need to develop shared visions. Collaborative approaches that focus on combined values can help achieve long-term resilience and enable a sustainable and just coexistence of...journal article 2021
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Mendonck, Michiel (author), Aparicio, Sofía (author), Díaz, Cristóbal González (author), Hernández, Margarita G. (author), Caro, Guillermo M.Muñoz (author), Anaya, José Javier (author), Cazaux, S.M. (author)This work studies ultrasonic propagation in liquid and ice water drops. The effect of porosity on attenuation of ultrasonic waves in the drops is also explored. The motivation of this research was the possible application of ultrasonic techniques to the study of interstellar and com-etary ice analogs. These ice analogs, made by vapor...journal article 2021
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Ažman Momirski, Lucija (author), van Mil, Yvonne (author), Hein, C.M. (author)Ports are clearly demarcated structures on land and water. They are fenced in, easily recognizable on satellite and orthophoto images, and they have specific functions. This apparent clarity of ports, their function and outline, in relation to nearby urban and rural areas, becomes more complex when explored through the lens of land use, that is...journal article 2021
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Krishnasamy, J. (author)Thermal Barrier Coating (TBC) systems are protective layers applied to critical structural components of gas turbines operating at high-temperature. A typical TBC system consists of three different layers, namely a ceramic Top Coat (TC), an active Thermally Grown Oxide (TGO) layer and a metallic Bond Coat (BC). The outer ceramic TC that protects...doctoral thesis 2020
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Design of actively controlled semi- permeable trailing edge inserts for aeroacoustic noise reductionKhan, Y. (author)An experimental study is conducted on the design of actively controlled semi-permeable inserts for mitigating turbulent boundary layer noise originating from the trailing edge of an airfoil. Two sets of perforated inserts with hole diameter: 0.8 mm and hole spacing: 1.5 mm & 3 mm, are considered. The inserts are 3-D printed with a middle...master thesis 2020
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Jonker, Ruben (author)In this research OpenFOAM is used to model and determine the complex hydrodynamic behaviour of a Homogeneous low-crested structure (HLCS) consisting of cubipod artificial concrete elements. The validated model is used to gain insight in the design sensitivities of a two dimensional cross sectional layout to reduce sea wall overtopping. HLCS and...master thesis 2020
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Musso, Guido (author), Azizi, Arash (author), Jommi, C. (author)The paper focuses on the hydromechanical behaviour of an unsaturated compacted clayey silt, accounting for fabric changes induced by drying–wetting cycles occurring at low stress levels. The response along isotropic compression and triaxial compression (shear) at constant water content was investigated by laboratory tests on both as-compacted...journal article 2020
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van Verseveld, C.J.W. (author), Gebert, J. (author)Effective gas permeability is an important parameter in the design of methane oxidation systems, governing diffusive oxygen ingress and the spatial spread of landfill gas. The influences of soil texture, compaction, soil moisture and the resulting air filled porosity on the gas permeability were researched by performing pressure loss...journal article 2020
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van Damme, M. (author)When soil surfaces are exposed to high shear stresses induced by high-velocity water flows, they erode. Erosion consists of the detachment, entrainment and transport of soil particles. When exposed to high shear stresses the process of soil detachment is no longer given by the pick-up of individual particles but by the continuous shear failure...journal article 2020
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Zhang, H. (author), Romero Rodriguez, C. (author), Dong, H. (author), Gan, Y. (author), Schlangen, E. (author), Šavija, B. (author)Carbonation of hydrated cement paste (HCP) causes numerous chemo-mechanical changes in the microstructure, e.g., porosity, strength, elastic modulus, and permeability, which have a significant influence on the durability of concrete structures. Due to its complexity, much is still not understood about the process of carbonation of HCP. The...journal article 2020
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Yiğittop, Yasin (author)In this study, non-destructive methods are applied to quantify the influence of concrete degradation by geologic conditions on the ability to retain nuclear waste deep underground in The Netherlands. Nuclear reactors play an important role in all four scenarios of the recent report of the IPCC to reach the CO2 reduction goals. Safety related...master thesis 2019
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Lottman, Tim (author)Fluvial reservoirs are difficult to model due to the high permeability contrast between the sandstone bodies and the overbank deposits and the complex geometry of the permeable (sandstone bodies) and impermeable zones (overbank deposits). A set of fluvial meandering models has been generated using FLUMY. The models represent a range of Net-to...master thesis 2019
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Zaalberg, Piet (author)OpenFOAM allowed the author to simulate a large number of scenarios in which the influences of cross-shore profile shape, cobble porosity, cobble diameter and layer thickness on wave overtopping were examined. Four validation runs and six simulations to map the sensitivity are compared with data from two physical experiments conducted in the...master thesis 2019
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Nedeljković, Marija (author)As the building sector is expanding, a growing interest in technologies that can reduce the CO2 emission from concrete production has led to partial replacement of cement with by-products from various industrial processes. Besides the partial replacement of cement, development of alkali activation technology ensures full replacement of cement in...doctoral thesis 2019
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Kramer, O.J.I. (author), El Hasadi, Yousef M.F. (author), de Moel, P.J. (author), Baars, Eric T. (author), Padding, J.T. (author), van der Hoek, J.P. (author)For an accurate prediction of the porosity of a liquid-solid homogenous fluidized bed, various empirical prediction models have been developed. Symbolic regression machine learning techniques are suitable for analyzing experimental fluidization data to produce empirical expressions for porosity as a function not only of fluid velocity and...conference paper 2019
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Ebrahimi, Amin (author), Kleijn, C.R. (author), Richardson, I.M. (author)The high degree of uncertainty and conflicting literature data on the value of the permeability coefficient (also known as the mushy zone constant), which aims to dampen fluid velocities in the mushy zone and suppress them in solid regions, is a critical drawback when using the fixed-grid enthalpy-porosity technique for modelling non-isothermal...journal article 2019
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Suzuki, T. (author), Hu, Zhan (author), Kumada, Kenji (author), Phan Khanh, L. (author), Zijlema, Marcel (author)A new wave-vegetation model is implemented in an open-source code, SWASH (Simulating WAves till SHore). The governing equations are the nonlinear shallow water equations, including non-hydrostatic pressure. Besides the commonly considered drag force induced by vertical vegetation cylinders, drag force induced by horizontal vegetation cylinders...journal article 2019
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Krishnasamy, J. (author), Ponnusami, Sathiskumar A. (author), Turteltaub, S.R. (author), van der Zwaag, S. (author)The influence of microstructural pore defects on fracture behaviour of Thermal Barrier Coatings (TBC) is analysed using finite element analysis involving cohesive elements. A concurrent multiscale approach is utilised whereby the microstructural features of the TBC are explicitly resolved within a unit cell embedded in a larger domain. Within...journal article 2019