Searched for: department:"Hydraulic"
(1 - 17 of 17)
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Van Rooijen, A.A. (author), Van Thiel de Vries, J.S.M. (author), McCall, R.T. (author), Van Dongeren, A.R. (author), Roelvink, J.A. (author), Reniers, A.J.H.M. (author)
Over the past decades the effect of vegetation (e.g. kelp, mangroves, sea grass) on nearshore coastal processes has received more and more attention. In recent years several numerical wave models have been extended to include this effect. In the current study, the numerical storm impact model XBeach was extended with formulations found in...
conference paper 2015
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Bodde, W.P. (author), Pomeroy, A.W.M. (author), Van Dongeren, A.R. (author), Lowe, R. (author), van Thiel de Vries, J.S.M. (author)
Coral reefs are highly valuable ecosystems, which are under an increasing number of environmental pressures. Sedimentation and sediment transport patterns are among key physical drivers of coral reefs, so it is important to improve our understanding of these poorly studied dynamics on reefs. To this purpose, flume experiments were performed on a...
conference paper 2014
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Van Dongeren, A. (author), Van Ormondt, M. (author), Sembiring, L. (author), Sasso, R. (author), Austin, M. (author), Briere, C. (author), Swinkels, C. (author), Roelvink, J.A. (author), Van Thiel De Vries, J.S.M. (author)
This paper describes the development of a physics-based rip current prediction system called CoSMoS. This system consists of a hydrodynamic prediction system which is composed of a train of surge and wave models from the global scale to the scale of a beach resort (order kilometers). For the beach resort scale model, it is of utmost importance...
conference paper 2013
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Pomeroy, A.W.M. (author), Lowe, R.J. (author), Bowyer, C. (author), Zhang, Z. (author), Falter, J. (author), Van Dongeren, A. (author), Roelvink, D. (author)
conference paper 2013
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Van der Westhuysen, A.J. (author), Van Dongeren, A.R. (author), Groeneweg, J. (author), Van Vledder, G.P. (author), Peters, H. (author), Gautier, C. (author), Van Nieuwkoop, J.C.C. (author)
The performance of the spectral wind wave model SWAN in tidal inlet seas was assessed on the basis of extensive wave measurements conducted in the Amelander Zeegat tidal inlet and the Dutch Eastern Wadden Sea, as well as relevant data from other inlets, lakes, estuaries and beaches. We found that the 2006 default SWAN model (version 40.51), the...
journal article 2012
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Pomeroy, A. (author), Lowe, R. (author), Symonds, G. (author), Van Dongeren, A. (author), Moore, C. (author)
A 3 week field study was conducted to investigate the dynamics of low-frequency (infragravity) wave motions over a fringing reef at Ningaloo Reef, Western Australia. Short-period wave motions (0.04–0.2 Hz) were observed to dissipate on the reef crest beyond which infragravity wave motions (0.004–0.04 Hz) gradually dominated toward the lagoon....
journal article 2012
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Haerens, P. (author), Ciavola, P. (author), Ferreira, O. (author), Van Dongeren, A. (author), Van Koningsveld, M. (author), Bolle, A. (author)
Extreme coastal storms have a destructive impact on coastal areas and directly affect people living in the coastal zone, being this emphasized by recent events (e.g. Katrina, Xynthia) which reminded the world of the vulnerability of coastal areas. The economic constraints and the increasing vulnerability of coastal areas (due to sea level rise...
conference paper 2012
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Van Santen, R.B. (author), Steetzel, H.J. (author), Van Thiel de Vries, J.S.M. (author), Van Dongeren, A. (author)
Regular dune safety assessments in the Netherlands are presently based on a 1D model approach, which is insufficiently applicable for more complex coastal areas with structures, tidal channels or spatially strong varying bathymetry. These situations require more advanced methods to assess the safety in dune areas. In this study a 2DH XBeach...
conference paper 2012
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Van Geer, P. (author), De Vries, S. (author), Van Dongeren, A. (author), Van Thiel de Vries, J.S.M. (author)
This paper describes the validation of the dune erosion model XBeach with laboratory measurement data of dune erosion in the presence of sea walls and revetments. Simulation results show that the essential dune set back processes are captured by the model and that the measurements at most locations are approximated quite well. Some aspects...
conference paper 2012
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Winter, G. (author), Van Dongeren, A. (author), De Schipper, M.A. (author), Van Thiele de Vries, J.S.M. (author)
Rip currents are wave-induced and off-shore directed flows which occur frequently in the surf zone and can pose a serious threat to swimmers. While the behaviour of rip currents has been studied in swell-dominated environments, less is known about their characteristics in wind-sea dominated environments. This study aims to improve the knowledge...
conference paper 2012
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Baart, F. (author), Bakker, M.A.J. (author), Van Dongeren, A. (author), Den Heijer, C. (author), Van Heteren, S. (author), Smit, M.W.J. (author), Van Koningsveld, M. (author), Pool, A. (author)
For the design of cost-effective coastal defence a precise estimate is needed of the 1/10 000 per year storm surge. A more precise estimate requires more observations. Therefore, the three greatest storm surges that hit the northern part of the Holland Coast in the 18th century are reconstructed. The reconstructions are based on paintings,...
journal article 2011
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Van Thiel de Vries, J.S.M. (author), Van Dongeren, A.R. (author), McCall, R. (author), Reniers, A. (author)
The effect of the longshore dimension on dune erosion is examined numerically with a 2DH process based model XBeach. Exploratory simulations are presented to examine longshore effects due to directionally spread waves, longshore variation in topography and longshore variation in bathymetry. The simulations reveal that alongshore sediment...
conference paper 2011
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Daly, C. (author), Roelvink, J.A. (author), Van Dongeren, A. (author), Van Thiel de Vries, J.S.M. (author), McCall, R.T. (author)
The effect of short wave breaking on low frequency waves is investigated using two breaker formulations implemented in a time-dependent numerical model (XBeach): (1) an advective-deterministic approach (ADA) and (2) the probabilistic breaker formulation of Roelvink (1993). Previous research has shown that the ADA breaker model gives different...
conference paper 2010
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Van Dongeren, A. (author), Battjes, J.A. (author), Janssen, T. (author), Van Noorloos, J. (author), Steenhauer, K. (author), Steenbergen, G. (author), Reniers, A. (author)
The growth rate, shoreline reflection, and dissipation of low?frequency waves are investigated using data obtained from physical experiments in the Delft University of Technology research flume and by parameter variation using the numerical model Delft3D?SurfBeat. The growth rate of the shoaling incoming long wave varies with depth with an...
journal article 2007
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De Vriend, H.J. (author), Dronkers, J. (author), Stive, M.J.F. (author), Van Dongeren, A. (author), Wang, J.H. (author)
lecture note: Tidal inlets and their associated basins (lagoons) are a common feature of lowland coasts all around the world. A significant part ofthe world's coastlines is formed by barrier island coasts, and most other tidal coasts are interrupted by estuaries and lagoon inlets. These tidal systems play a crucial role in the sediment budget...
lecture notes 2002
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Van Dongeren, A. (author), Reniers, A. (author)
In this paper the nonlinear numerical model SHORECIRC is applied to simulate the intragravity wave conditions on two days during the 1990 Delilah campaign. In order to simulate the wave conditions an algorithm has been derived which synthesizes a directional of/shore wavefield from data including the bound, directional low-frequency components....
report 1999
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Reniers, A. (author), Van Dongeren, A. (author)
In the following we consider the forcing of long waves by normally or obliquely incident grouped short waves, also known as surf beat. Two mechanisms responsible for the generation of long waves are considered: the release of the bound long waves associated with changes in the spatial variation of the incident short wave energy [Longuet-Higgins...
report 1990
Searched for: department:"Hydraulic"
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