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Vasarmidis, Panagiotis (author), Klonaris, Georgios (author), Zijlema, Marcel (author), Stratigaki, Vasiliki (author), Troch, Peter (author)Despite the increasing use of non-hydrostatic models in the study of wave processes in coastal regions, there is still limited understanding of the non-linear properties of the governing equations and how they improve with increased vertical resolution. In this study, the governing equations of the non-hydrostatic wave model SWASH are...journal article 2024
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van der Ven, Roald (author)Storm surges cause elevated water levels, potentially leading to dune erosion, which is crucial to understand due to the protective function of dunes and sandy coastal defences against flooding. Dunes are dynamic systems, extensively studied through flumes and field observations. Collecting hydrodynamic and morphological data from erosion-prone...master thesis 2023
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Numerical Simulations of Effects of the Layout of Permeable Pile Groin Systems on Longshore CurrentsZhang, R. (author), Chen, Y. (author), Yao, P. (author), Stive, M.J.F. (author), Zeng, Jian (author)Coastal permeable groins have been used to protect beaches from erosion for centuries. However, the hydraulic functioning of permeable groins has not been fully understood and their design heavily depends on engineering experiences. In this study, numerical experiments were executed to investigate the effects of layout configurations of a...journal article 2023
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Suzuki, T. (author), Altomare, Corrado (author), Willems, Marc (author), Dan, Sebastian (author)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...journal article 2023
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Alferink, M. (author), Gijón Mancheño, A. (author), Suzuki, Tomohiro (author), Reniers, A.J.H.M. (author)The coastline of Demak, Indonesia, has been eroding during the<br/>last 15 years. Coastal retreat in Demak is caused by a combination<br/>of mangrove deforestation and local subsidence due to groundwater<br/>extraction in the nearby city of Semarang. To restore the lost mangrove<br/>forest, permeable dams, consisting of bamboo poles with a<br/...journal article 2023
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Including the effect of depth-uniform ambient currents on waves in a non-hydrostatic wave-flow modelRijnsdorp, D.P. (author), van Rooijen, Arnold (author), Reniers, A.J.H.M. (author), Tissier, M.F.S. (author), de Wit, F.P. (author), Zijlema, Marcel (author)Currents can affect the evolution of waves in nearshore regions through altering their wavenumber and amplitude. Including the effect of ambient currents (e.g., tidal and wind-driven) on waves in phase-resolving wave models is not straightforward as it requires appropriate boundary conditions in combination with a large domain size and long...journal article 2023
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Dijkstra, Twan (author)Estimating wave runup is of crucial importance during a coastal risk assessment. Currently, runup levels are usually calculated using empirical formula derived from experiments conducted at beaches all over the world, and during different beach states. During this research, conditions are analyzed where runup reaches the dune toe and above. The...master thesis 2022
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Michels, Dirk-Jan (author)On the east coast of Romania, at Eforie, coastal erosion manifests. To strengthen the coastal area a large coastal protection project was setup involving beach nourishment combined with the construction of breakwaters. The breakwaters are designed with the well-known modified Van der Meer formulas. To ensure confidence in the breakwaters...master thesis 2022
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Rekveld, Menno (author)The water authority ”Hunze en Aa’s” initiated a demonstration project adjacent to the Dollard where non traditional dike reinforcement strategies could be developed. For this project Sweco designed a sea dike with an outer slope more gentle than traditional. This dike is called the ”Wide Green Dike” (WGD) and has an outer slope of 1:7. This dike...master thesis 2022
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Scheurwater, Bart (author)Witteveen+Bos as part of construction consortium Nautilus, has prepared the design of a sea defence system in Middelkerke. The very shallow water conditions (h/Hm0 = 0.3) and complex geometry of the structure, i.e. a high berm and stepped revetment, caused uncertainties in the usage of the empirical equations from the EurOtop Manual (2018) for...master thesis 2022
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Nguyên, Hà (author)A sea-dike system is of importance for the protection of the hinterland. However, the effect of very gentle and shallow sloping foreshores (in the order up to 1 in 1000) on wave overtopping processes has not yet been quantified enough and, thus, so far is not well understood. This dissertation seeks an answer to the question of whether the...doctoral thesis 2022
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Alferink, Marijn (author)The coastline of Demak, Indonesia has been eroded during the last 15 years. To restore the natural coastal protection which existed out of mangroves forest, permeable dams, consisting of bamboo poles with a brushwood filling, have been built to attenuate the waves and facilitate sedimentation behind the dams and thus creating a habitat for...master thesis 2022
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Suzuki, T. (author), García-Feal, Orlando (author), Domínguez, José M. (author), Altomare, Corrado (author)Ongoing climate change is a significant threat to coastal communities. To understand potential risks during extreme storm events, detailed post-overtopping processes are investigated using DualSPHysics and SWASH with a newly developed approach. It is a calibrated-based wave generation: a target incident wave is first obtained from the...journal article 2022
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Rijnsdorp, D.P. (author), Wolgamot, Hugh (author), Zijlema, Marcel (author)Predictions of the wave-induced response of floating structures that are moored in a harbour or coastal waters require an accurate description of the (nonlinear) evolution of waves over variable bottom topography, the interactions of the waves with the structure, and the dynamics of the mooring system. In this paper, we present a new advanced...journal article 2022
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Kranenborg, Joost W.M. (author), Campmans, Geert H.P. (author), Jacobsen, Niels G. (author), van der Werf, Jebbe J. (author), Reniers, A.J.H.M. (author), Hulscher, Suzanne J.M.H. (author)We present a fully coupled 2DV morphodynamic model, implemented in OpenFOAM<sup>®</sup> that is capable of simulating swash-zone morphodynamics of sandy beaches. The hydrodynamics are described by the Reynolds-averaged Navier–Stokes (RANS) equations with a (Formula presented.) turbulence model and the Volume of Fluid (VoF) approach for...journal article 2022
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Dào, H.T. (author), Hofland, Bas (author), Stive, M.J.F. (author), Mai, Tri (author), Ngo, Anh (author)Wooden fences are nature-based supporting structures to restore mangroves in the Mekong Delta. The hydraulic functioning of wooden fences was studied in previous studies. However, the role of bathymetry in the dissipation and damping of waves by wooden fences has not been studied yet. Thus, in this study, a numerical approach is used to find...conference paper 2022
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van Noort, Rieneke (author)Coral reefs are vital to the prosperity of the world and the local communities by providing food and coastal protection. Coral reefs are home to 25% of marine life and have therefore gained the nickname ’rainforest of the sea’. However, the reefs are being damaged by climate change and human intervention, resulting in an alarming rate of...master thesis 2021
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Rutten, J. (author), Arriaga, Jaime (author), Montoya, Leonardo D. (author), Mariño-Tapia, Ismael J. (author), Escalante-Mancera, Edgar (author), Mendoza, E. Tonatiuh (author), van Tussenbroek, Brigitta I. (author), Appendini, Christian M. (author)Massive quantities of the pelagic brown macroalgae Sargassum spp. (sargassum) have been invading the Caribbean and West African shores since 2011, causing devastating effects on the coastal ecosystem and local economy. Little is known about sargassum beaching dynamics and the capacity of the coastal system to naturally remove beached...journal article 2021
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da Silva, Renan F. (author), Rijnsdorp, D.P. (author), Hansen, Jeff E. (author), Lowe, Ryan (author), Buckley, Mark (author), Zijlema, Marcel (author)Analysis of the mean (wave-averaged) momentum balance is a common approach used to explain the physical forcing driving wave set-up and mean currents in the nearshore zone. Traditionally this approach has been applied to phase-averaged models but has more recently been applied to phase-resolving models using post-processing, whereby model...journal article 2021
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Rijnsdorp, D.P. (author), Buckley, Mark L. (author), da Silva, Renan F. (author), Cuttler, Michael V.W. (author), Hansen, Jeff E. (author), Lowe, Ryan J. (author), Green, Rebecca H. (author), Storlazzi, Curt D. (author)Two-dimensional mean wave-driven flow and setup dynamics were investigated at a reef-lagoon system at Ningaloo Reef, Western Australia, using the numerical wave-flow model, SWASH. Phase-resolved numerical simulations of the wave and flow fields, validated with highly detailed field observations (including >10 sensors through the energetic...journal article 2021