Searched for: subject%3A%22wave%255C+generation%22
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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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Mortimer, William (author), Calvert, R. (author), Antonini, A. (author), Greaves, Deborah (author), Raby, Alison (author), van den Bremer, T.S. (author)
Experiments are contaminated by second-order error waves at sub- and super-harmonic frequencies when first-order wave generation is used. Herein, we investigate by experiment the implications of second-order wave generation theory for dynamic wave force and run-up on a vertical wall in shallow to intermediate water depth (k<sub>0</sub>d=0.5−1...
journal article 2023
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van Tatenhove, Rick (author)
In this report a new enriched finite volume method is introduced. This method will be particularly useful for fluid-structure interaction problems. In engineering many problems are in the domain of fluidstructure interaction. Examples of these are water in sea locks, blood flowing in vessels and sailing ships. Fluid problems are usually solved...
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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Mortimer, William (author), Raby, Alison (author), Antonini, A. (author), Greaves, Deborah (author), van den Bremer, T.S. (author)
Using linear (first-order) wave generation theory in laboratory experiments, leads to significant contamination of the wave field by free non-linear (second-order) error waves, increasingly so at shallower depths. Second-order wave generation theory has previously been established, and so has correct generation of the bound set-down, made up...
journal article 2022
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Doeleman, Madelief (author)
Large morphological features, so-called sand ridges, with an average height and length in the order of 10 meters and 3 kilometers respectively are located at future offshore wind farm locations in the Dutch North Sea. Recent literature, considering relatively deep water conditions (kh 1, with k the wave number and h the water depth), has shown...
master thesis 2021
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Vasarmidis, Panagiotis (author), Stratigaki, Vasiliki (author), Suzuki, T. (author), Zijlema, Marcel (author), Troch, Peter (author)
The weakly reflective wave generation is a wave generation and absorption method in phase-resolving models, based on the assumption that the waves propagating towards the wave generation boundary are small amplitude shallow water waves with direction perpendicular to the boundary. This assumption makes the method weakly reflective for...
journal article 2021
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Amijs, Tijn (author)
The development of an Active Reflection Compensation (ARC) algorithm for a wave generator is challenging. Water behaves in a strong nonlinear way and the time available for the computation of the compensating segment displacements is short. Especially for the case where the wave height sensors are mounted on the surface of the segments. The...
master thesis 2020
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Vasarmidis, Panagiotis (author), Stratigaki, Vasiliki (author), Suzuki, T. (author), Zijlema, Marcel (author), Troch, Peter (author)
In this work, internal wave generation techniques are developed in an open source non-hydrostatic wave model (SimulatingWAves till SHore, SWASH) for accurate generation of regular and irregular long-crested waves. Two different internal wave generation techniques are examined: a source term addition method where additional surface elevation is...
journal article 2019
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Li, Xiaoran (author)
This thesis proposes a novel low distortion, on-chip sine-wave generator. A low distortion input is required in many test and measurement setups for analog and mixed-signal systems, where the input signal should have less distortion than that contributed by the device under test (DUT). For conventional oscillators, there is a compromise between...
master thesis 2017
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van der Lugt, Marlies (author)
Waves in coastal waters play a role in forecasting storm conditions, as boundary conditions for the assessment of coastal risk and in coastal structure design. Assessment of their impact can be made through numerical modeling. In a forecasting context, the CPU time of the wave model is decisive in its suitability. Recent years wave model...
master thesis 2017
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Wenneker, I. (author), Hoffmann, Rob (author), Hofland, Bas (author)
The new Delta Flume of Deltares (300 m long x 5 m wide x 9.5 m deep) is used to test wave interaction with, among others, sea defences (dikes, dunes), coastal structures (e.g. breakwaters, revetments and jetties), eco-dynamic designs and<br/>coastal morphology. The present paper presents the first outcomes of the performance tests of the flume...
conference paper 2016
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Moalemi, M. (author)
Landslide generated Tsunamis are classified as a type of impulse waves. Several parameters including the geometry of the reservoir affect the behavior of impulse waves. The effects of geometry on impulse wave parameters are not yet fully understood. In order to investigate the effects of geometry on landslide generated impulse waves a total of...
master thesis 2010
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De Schipper, M.A. (author), De Vries, S. (author), Henriquez, M. (author), Reniers, A.J.H.M. (author), De Koning Gans, H.J. (author), Labeur, R.J. (author), Stive, M.J.F. (author)
In this paper a new wave pool concept is presented using ship hulls as wave generators. To evaluate the potential of such a concept a towing tank experiment is conducted to investigate ship wave generation in a confined space. In the towing tank experiment various hull sizes and velocities are examined to maximize the generated wave height. The...
conference paper 2009
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Bottema, M. (author)
In the period 1997-2007, an extensive wind and wave measuring campaign has been carried out on Lake IJssel and Lake Sloten in The Netherlands. The aim of this campaign was to gather and analyse welldocumented wind and wave measurements of high quality, for a range of fetch, depth and (strong) wind conditions. The data should serve a number of...
report 2007
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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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Dingemans, M.W. (author)
report 1998
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Van Gruijthuijsen, M.F.J. (author)
In this thesis, the wave prediction model SWAN is validated on field data obtained from wave growth experiments that were done in Lake George, a shallow lake in Australia. SWAN, which is an acronym for Simulation of WAves in Nearshore areas, is a numerical model, developed at the University of Technology in Delft, to obtain estimates of wave...
master thesis 1996
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Van Leeuwen, P.J. (author), Klopman, G. (author)
For the generation of second-order random waves in a flume the control signal for the wave board has to be correct up to second order. An expression for this control signal is derived with the perturbation method of multiple scales. It is much less complex and requires less computation time than the expressions obtained from the full second...
report 1991
document
Wouters, J. (author)
report 1983
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