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A coupled volume-of-fluid/immersed-boundary method for the study of propagating waves over complex-shaped bottom: Application to the solitary wave

Gsell, Simon and Bonometti, Thomas and Astruc, Dominique A coupled volume-of-fluid/immersed-boundary method for the study of propagating waves over complex-shaped bottom: Application to the solitary wave. (2016) Computers and Fluids, 131. 56-65. ISSN 0045-7930

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Official URL: http://dx.doi.org/10.1016/j.compfluid.2016.03.013

Abstract

We report about a numerical approach based on the direct numerical simulation of the Navier–Stokes equations for the study of wave-bottom interaction problems. A Volume of Fluid (VOF) method is coupled with an Immersed Boundary Method (IBM) and applied to the simulation of propagating waves over complex shaped bottoms. We first investigate the flow induced by a solitary wave over generic bottoms (i.e. a semi-circular cylinder and a sloping beach). We show that the method is able to describe various important features of wave-bottom interactions, including flow separation, vortex shedding and wave breaking, while keeping a reasonable computational effort. Then we demonstrate the capability of the present approach to model arbitrary shaped bottoms by simulating the run-up of a breaking solitary wave over a natural beach profile.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Computers and Fluids website : http://www.sciencedirect.com/science/article/pii/S0045793016300664
HAL Id:hal-01293270
Audience (journal):International peer-reviewed journal
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Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:24 Mar 2016 13:38

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