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Zou, P. (author), Ruiter, N. (author), Bricker, J.D. (author), Uijttewaal, W.S.J. (author)The effects of surface roughness as induced by marine fouling on the hydrodynamic forces on a submerged floating tunnel (SFT) are experimentally and numerically investigated in detail at Reynolds numbers Re = 8.125 × 10<sup>3</sup>–5.25 × 10<sup>4</sup>. A sensitivity analysis to different roughness parameters including roughness height,...journal article 2023
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Zou, P. (author), Bricker, J.D. (author), Chen, L. Z. (author), Uijttewaal, W.S.J. (author), Ferreira, Carlos (author)In order to assess the dynamic performance of a submerged floating tunnel (SFT) subject to flow-induced vibration (FIV) conditions in a practical engineering application, a one-way fluid–structure interaction (FSI) model consisting of multi-scale hydrodynamic solvers combined with the finite element method (FEM) is established. A typical long...journal article 2022
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- Yan Toe, C. (author), Uijttewaal, W.S.J. (author), Wüthrich, D. (author) conference paper 2022
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- Buffon, P. (author), Uijttewaal, W.S.J. (author), Franca, M.J. (author), Valero Huerta, Daniel (author) conference paper 2022
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Hu, Z. (author), Lian, S. (author), Zitman, T.J. (author), Wang, H. (author), He, Z. (author), Wei, H. (author), Ren, L. (author), Uijttewaal, W.S.J. (author), Suzuki, T. (author)Wave height attenuation in vegetation canopies is often all attributed to the drag force exerted by vegetation, whereas other potential dissipation process is often neglected. Previous studies without vegetation have found that opposing currents can induce wave breaking and greatly increase dissipation. It is not clear if similar process may...journal article 2022
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- Pasman, R. (author), Schielen, R.M.J. (author), Bricker, J.D. (author), van der Hout, A.J. (author), Mosselman, E. (author), Uijttewaal, W.S.J. (author), Collas, Frank (author), Huthoff, Freek (author) abstract 2021
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Yildiz, B. (author), Uijttewaal, W.S.J. (author), Bricker, J.D. (author), Mosselman, E. (author)Weirs are flow control structures that can be used for flow diversion purposes. They are classified according to section geometry or their length in the flow direction. For sharp-crested rectangular weirs, Rehbock [1] derived stage-discharge equations. In contracted geometries, streamlines curve at the approach flow leading to variations in flow...conference paper 2021
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Zou, P. (author), Bricker, J.D. (author), Uijttewaal, W.S.J. (author)The interaction between an oceanic internal solitary wave (ISW) and a prototype submerged floating tunnel (SFT) is numerically investigated. Effect of oceanic internal solitary wave amplitude, the relative distance of the SFT to the pycnocline, cross-sectional geometry of the SFT, and the density ratio of the two fluid layers are analyzed. At...journal article 2021
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Alhaddad, S.M.S. (author), Labeur, R.J. (author), Uijttewaal, W.S.J. (author)The ability to estimate the erosion rate along an underwater breach face is crucial to understand the evolution of breaching failure. To this end, breaching erosion models were developed and applied in numerical models. However, these erosion models have never been validated, owing to the scarcity of direct measurements of turbidity currents...conference paper 2021
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Zou, P. (author), Bricker, J.D. (author), Uijttewaal, W.S.J. (author)Concepts of a submerged floating tunnel (SFT) for novel sea-crossings have been researched in recent years. An SFT tube should be moored afloat by tensioned mooring systems to maintain the tube position under complex hydrodynamic loads. In-line force is amongst the dominant hydrodynamic parameters in the SFT cross-section design and the...journal article 2021
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Verbeek, Merel C. (author), Labeur, R.J. (author), Uijttewaal, W.S.J. (author)The tidal flow between bridge pillars and through open barriers is a promising source of ocean energy which can be exploited using tidal stream turbines, as proven recently by operational demonstration plants. The aim of this study is to clarify the consequences for the power output of tidal turbines when placing them in a hydraulic structure...journal article 2021
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Wei, P. (author), Uijttewaal, W.S.J. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)Accurate rheological characterisation of sewage waste activated sludge (WAS) is of high importance for downstream processing related to optimised sludge pumping and mixing, assessment of energy demands and overall process design. However, to elaborate rheological behaviour is often challenging under dynamic operational conditions in practice....journal article 2021
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Gijón Mancheño, A. (author), Jansen, Wiljan (author), Winterwerp, J.C. (author), Uijttewaal, W.S.J. (author)Mangrove vegetation provides natural protection against coastal hazards like flooding and erosion. In spite of their economic and societal value, mangrove forests have experienced a worldwide decline due to human activities. Bamboo structures, formed by poles driven into the soil, are being used to create a sheltered environment for mangrove...journal article 2021
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Gijón Mancheño, A. (author), Jansen, W. (author), Uijttewaal, W.S.J. (author), Reniers, A.J.H.M. (author), van Rooijen, A. A. (author), Suzuki, T. (author), Etminan, V. (author), Winterwerp, J.C. (author)Mangrove vegetation constitutes a natural coastal defence against waves and erosion. Despite their protective role, mangrove ecosystems have experienced continuous degradation over the last decades due to human causes. At retreating mangrove coastlines, bamboo structures are built to create new habitat for mangrove colonization. Existing...journal article 2021
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van Os, W.J. (author), Uijttewaal, W.S.J. (author), Labeur, R.J. (author), Osório, A.L.N.A. (author), Mosselman, E. (author), Lokin, L.R. (author)Groynes have been replaced by longitudinal training walls in an 11-km long pilot project to optimize training of the river Waal in the Netherlands. These train ing walls improve navigability, reduce flood levels, create a sheltered second channel with more favourable ecological conditions, and decrease the erosive action on the river bed that...conference paper 2020
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Truong, S.H. (author), Li, Un (author), Uijttewaal, W.S.J. (author)Transverse exchange processes of mass and momentum in floodplain regions of channels are of primary importance regarding the sediment transport and riverbank stability. The presence of large horizontal coherent structures (LHCSs) at the interface of the floodplain and main channel regions may contribute up to 90% the amount of transverse...conference paper 2020
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- van Os, Annemarie (author), Lokin, Lieke (author), Mosselman, E. (author), Uijttewaal, W.S.J. (author), Labeur, R.J. (author), Osorio, Ana Luisa (author) abstract 2020
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Alhaddad, S.M.S. (author), de Wit, Lynyrd (author), Labeur, R.J. (author), Uijttewaal, W.S.J. (author)Breaching flow slides result in a turbidity current running over and directly interacting with the eroding, submarine slope surface, thereby promoting further sediment erosion. The investigation and understanding of this current are crucial, as it is the main parameter influencing the failure evolution and fate of sediment during the breaching...journal article 2020
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Alhaddad, S.M.S. (author), Labeur, R.J. (author), Uijttewaal, W.S.J. (author)This paper starts with surveying the state-of-the-art knowledge of breaching flow slides, with an emphasis on the relevant fluid mechanics. The governing physical processes of breaching flow slides are explained. The paper highlights the important roles of the associated turbidity current and the frequent surficial slides in increasing the...journal article 2020
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- Duro, G. (author), Crosato, A. (author), Kleinhans, Maarten G. (author), Uijttewaal, W.S.J. (author) abstract 2020