Wave overtopping over a sea dike

Li, Tingqiu; Troch, Peter; Rouck, Julien De

doi:10.1016/j.jcp.2004.01.022

Cited by 70 publications

(55 citation statements)

References 60 publications

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“…As a consequence, this is a key point that the results obtained by Ghent's new solver look much more promising. Owing to the high quality in the stability with Ghent's new solver [19] even over a long period of integration time, on the other hand, this provides a great chance: the capture of the irregular waves, which is more challenging case, especially when waves break during overtopping of waves (see [19,20]). In this method, a transport equation for the volume fraction function is solved at each time step and the shape of the free surface can then be reconstructed from the distribution of the volume fraction function.…”

Section: Clash -Evk3-ct-2001-00058mentioning

confidence: 99%

“…UGent have developed a new numerical modelling for large eddy simulation (LES) of overtopping of water waves over sloping and vertical structures in a numerical wave tank. All the computed results shown in this report were produced with our recently developed solver, named LVoF, which has been published in JCP [19]. According to our suggestion, an additional job involves the extension to 3D problems.…”

Section: Clash -Evk3-ct-2001-00058mentioning

confidence: 99%

“…In the current study, we developed a new solver [19] for modelling of wave run-up and wave overtopping events using a VoF method. Also, the code is capable of simulating the breaking of the periodical wave trains on the slope of a sea dike.…”

Section: The Present Workmentioning

confidence: 99%

“…The superscripts (n − 1, n, n + 1) stand for the previous, current and next time levels, respectively. For solution of a step profile of α in VoF, a hybrid approach [19] that includes the weighted upwind scheme and a blending one is adopted, dependent of the distributions of α. This is a simple and effective approach, especially without the need of interface reconstruction during tracking.…”

Section: Solution Proceduresmentioning

confidence: 99%

“…At the inlet, an absorbing-generating boundary condition is introduced so that a well-suited boundary value for α is specified. The more detailed description can be found in our current paper [19].…”

Section: Solution Proceduresmentioning

confidence: 99%

See 4 more Smart Citations

Estudo do Galgamento de Estruturas Marítimas utilizando um Modelo Numérico baseado na Teoria da Onda em Condições de Água pouco Profunda

Reis¹,

Neves²

2010

RGCI

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The main objective of Workpackage 5 is to use numerical simulation of wave overtopping in order to solve the problem of suspected scale effects. A second, related, objective is to improve existing codes in such a way as they are able to simulate wave overtopping in a reliable way. The final, single, objective is to numerically model long waves on the shallow foreshore at Petten in order to understand the phenomenon of long waves and their effect on overtopping. This report deals with the work undertaken towards the first two objectives, the simulations undertaken for objective 3 are the subject of a separate report entitled "Influence of low-frequency waves on wave overtopping" by M.R.A. van Gent and C.C. Giarrusso and published by WL | Delft hydraulics in November 2003.Realistic simulations of wave overtopping require numerical methods which are able accurately to simulate the shoaling, breaking and possible overturning of waves prior to their impact on the seawall. It is a further requirement that the simulation continues after impact, modelling the formation of the overtopping jet and the reflection of the wave. The research groups at Manchester Metropolitan University (MMU) and the University of Gent (UGent) have been working in parallel on the development of such numerical codes. The MMU code, AMAZON-SC, is a numerical wave flume based on the free surface capturing approach. While the UGent code, LVOF, is a numerical wave basin based on the volume of fluid approach. This report describes the progress of these numerical methods, in order to address the first two objectives of Workpackage 5. Their application to various cases, is also discussed, including: a test problem involving wave overtopping of a smooth sea-dike, wave overtopping at Samphire Hoe and an investigation of scale effects on rough impermeable structures.The Report begins with a general introduction, followed by a section describing AMAZON-SC (the MMU code), a section describing LVOF (the UGent code) and then some general conclusions.

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Section: Clash -Evk3-ct-2001-00058mentioning

confidence: 99%

Section: Clash -Evk3-ct-2001-00058mentioning

confidence: 99%

Section: The Present Workmentioning

confidence: 99%

Section: Solution Proceduresmentioning

confidence: 99%

Section: Solution Proceduresmentioning

confidence: 99%

See 3 more Smart Citations

Estudo do Galgamento de Estruturas Marítimas utilizando um Modelo Numérico baseado na Teoria da Onda em Condições de Água pouco Profunda

Reis¹,

Neves²

2010

RGCI

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Incompressible SPH simulation of wave breaking and overtopping with turbulence modelling

Shao

2005

Int. J. Numer. Meth. Fluids

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SUMMARYIn this paper a truly incompressible version of the smoothed particle hydrodynamics (SPH) method is presented to investigate the surface wave overtopping. SPH is a pure Lagrangian approach which can handle large deformations of the free surface with high accuracy. The governing equations are solved based on the SPH particle interaction models and the incompressible algorithm of pressure projection is implemented by enforcing the constant particle density. The two-equation k-model is an e ective way of dealing with the turbulence and vortices during wave breaking and overtopping and it is coupled with the incompressible SPH numerical scheme. The SPH model is employed to reproduce the experiment and computations of wave overtopping of a sloping sea wall. The computations are validated against the experimental and numerical data found in the literatures and good agreement is observed. Besides, the convergence behaviour of the numerical scheme and the e ects of particle spacing reÿnement and turbulence modelling on the simulation results are also investigated in further detail. The sensitivity of the computed wave breaking and overtopping on these issues is discussed and clariÿed.

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Finite volume simulation of viscous free surface waves using the Cartesian cut cell approach

Bai

Mingham

Causon

et al. 2009

Numerical Methods in Fluids

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SUMMARYThe application of the Cartesian cut cell approach in the numerical simulation of two-dimensional viscous free surface flows is described. The Arbitrary Lagrangian-Eulerian method is adopted to update the moving free water surface in a semi-Lagrangian scheme, in which a finite volume method of second-order accuracy in space is used for solving the flow field based on an Eulerian description at each time step. The cut cell approach is employed to track the free surface and solid boundaries across a stationary background Cartesian grid covering the whole fluid, air and solid regions. In this approach, the cells full of air and solid are not calculated explicitly, and apart from the fluid cells, cut cells and merged cells are treated separately in terms of corresponding boundary conditions. In order to validate the present numerical method, current flow past a circular cylinder at various low Reynolds numbers and wave sloshing in a rectangular container are tested first. Further numerical results are obtained for the propagation of regular waves and a wave passing over a submerged dike. The model is also applied to the simulation of radiation waves induced by a forced oscillating submerged circular cylinder. The results indicate that the present numerical model using the Cartesian cut cell approach is highly efficient for solving the wave fields, and fully automatic for generating boundary fitted meshes. These features are particularly useful for moving boundary problems in a larger computational domain and with a longer simulation time.

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Wave overtopping over a sea dike

Cited by 70 publications

References 60 publications

Estudo do Galgamento de Estruturas Marítimas utilizando um Modelo Numérico baseado na Teoria da Onda em Condições de Água pouco Profunda

Estudo do Galgamento de Estruturas Marítimas utilizando um Modelo Numérico baseado na Teoria da Onda em Condições de Água pouco Profunda

Incompressible SPH simulation of wave breaking and overtopping with turbulence modelling

Finite volume simulation of viscous free surface waves using the Cartesian cut cell approach

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