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Modélisation numérique d'impacts de vagues sur un mur: prise en compte de la présence d'air dans l'eau

Abstract : This work presents a numerical model designed for the simulation of water wave impacts on a structure when aeration of the liquid phase is considered. The model is based on a multifluid Navier-Stokes approach in which fluids are compressible. The numerical methods are a finite volume algorithm in space and a second order Runge- Kutta method in time, the interface is tracked through a pressure relaxation method. A validation of this model is performed. It shows a good accuracy for acoustic and shock wave propagation in a bubbly liquid and for wave breaking. Then results from wave impact on a vertical wall are analysed. The influences of the air content and of the wave breaking distance from the wall are investigated. The oscillation of the entrapped air pocket showed to be linked to the oscillations of the pressure at the wall. The presence of strong gradients in front of wall is highlighted.
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https://tel.archives-ouvertes.fr/tel-00410870
Contributor : Louis-Romain Plumerault <>
Submitted on : Friday, June 4, 2010 - 10:57:14 AM
Last modification on : Friday, January 15, 2021 - 9:24:23 AM
Long-term archiving on: : Friday, September 24, 2010 - 11:26:19 AM

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  • HAL Id : tel-00410870, version 4

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Louis-Romain Plumerault. Modélisation numérique d'impacts de vagues sur un mur: prise en compte de la présence d'air dans l'eau. Sciences de la Terre. Laboratoire de Sciences Appliquées au Génie Civil et Côtier, 2009. Français. ⟨tel-00410870v4⟩

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