Numerical modeling of extreme rogue waves generated by directional energy focusing

Fochesato, Christophe; Grilli, Stéphan T.; Dias, Frédéric

doi:10.1016/j.wavemoti.2007.01.003

Cited by 129 publications

(87 citation statements)

References 37 publications

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“…The kind of application motivating this development stems from the coastal engineering problems, chief among them dam-breaking problem and tsunami (e.g. see [29]). The main difficulty for this class of problems is not only the usual one for fluids pertaining to the free-surface flow (e.g.…”

Section: Introductionmentioning

confidence: 99%

Partitioned solution to fluid–structure interaction problem in application to free-surface flows

Kassiotis

Ibrahimbegović

Matthies

2010

European Journal of Mechanics - B/Fluids

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In this work we discuss a way to compute the impact of free-surface flow on nonlinear structures. The approach chosen rely on a partitioned strategy that allows to solve strongly coupled fluid-structure interaction problem. It is then possible to re-use existing and validated strategy for each sub-problem. The structure is formulated in a Lagrangian way and solved by the finite element method. The free-surface flow approach considers a Volume-Of-Fluid (VOF) strategy formulated in an Arbitrary Lagrangian-Eulerian (ALE) framework, and the finite volume are used to discrete and solve this problem. The software coupling is ensured in an efficient way using the Communication Template Library (CTL). Numerical examples presented herein concern 2D validations case but also 3D problems with a large number of equations to be solved.

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Section: Introductionmentioning

confidence: 99%

Partitioned solution to fluid–structure interaction problem in application to free-surface flows

Kassiotis

Ibrahimbegović

Matthies

2010

European Journal of Mechanics - B/Fluids

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“…Fochesato et al, 2007;Babanin et al, 2011). This is a three-dimensional phenomenon, and the finite-depth conditions can potentially magnify or even trigger the effect under appropriate wavelength/direction, water-depth and bottom-topography situations.…”

Section: The Measurementsmentioning

confidence: 99%

Spectral wave modelling of Typhoon Krosa

Babanin

Hsu

Roland

et al. 2011

Nat. Hazards Earth Syst. Sci.

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Abstract.This paper presents modelling the wave conditions in Typhoon Krosa prior to touching Taiwan in October 2007, with third-generation wave models of SWAN and WWM. The accuracy of the extreme wave measurement H max = 32 m with significant wave height H s ≈ 24 m at the depth of h = 38 m is discussed first. It is concluded that the measurement does not appear faulty and is physically realistic. The numerical results are then analysed in order to examine the models' capability to reproduce the observed conditions. It is found that neither SWAN nor WWMII are able to hindcast the extreme measurement. Series of sensitivity tests are conducted for different numerical and diffraction schemes, and source functions. It is shown that, in the circumstances, the model performance only improves in response to the bottom-limited breaking formulation.

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“…Significant progress using this approach has been made by Graziani and Landrini (1999), Xue et al (2001) and Fochesato et al (2007). Most recently, Hague and Swan (2009) have developed a physical-space BEM that utilises multiple fluxes to overcome problems associated with computations at the domain corners, thereby avoiding the need to perform explicit smoothing, filtering or re-gridding.…”

Section: Introductionmentioning

confidence: 99%

Force-controlled absorption in a fully-nonlinear numerical wave tank

Spinneken

Christou

Swan

2014

Journal of Computational Physics

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An active control methodology for the absorption of water waves in a numerical wave tank is introduced. This methodology is based upon a force-feedback technique which has previously been shown to be very effective in physical wave tanks. Unlike other methods, an a-priori knowledge of the wave conditions in the tank is not required; the absorption controller being designed to automatically respond to a wide range of wave conditions. In comparison to numerical sponge layers, effective wave absorption is achieved on the boundary, thereby minimising the spatial extent of the numerical wave tank. In contrast to the imposition of radiation conditions, the scheme is inherently capable of absorbing irregular waves. Most importantly, simultaneous generation and absorption can be achieved. This is an important advance when considering inclusion of reflective bodies within the numerical wave tank.In designing the absorption controller, an infinite impulse response filter is adopted, thereby eliminating the problem of non-causality in the controller optimisation. Two alternative controllers are considered, both implemented in a fully-nonlinear wave tank based on a multiple-flux boundary element scheme.To simplify the problem under consideration, the present analysis is limited to water waves propagating in a two-dimensional domain.

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Numerical modeling of extreme rogue waves generated by directional energy focusing

Cited by 129 publications

References 37 publications

Partitioned solution to fluid–structure interaction problem in application to free-surface flows

Partitioned solution to fluid–structure interaction problem in application to free-surface flows

Spectral wave modelling of Typhoon Krosa

Force-controlled absorption in a fully-nonlinear numerical wave tank

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