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Modélisation de l'interaction entre un fluide à surface libre et un solide rigide soumis à des efforts extérieurs par une méthode de pénalisation.

Abstract : This works presents the interaction between a free surface fluid and a rigid solid subjected to external stiffness and damping forces. The central point of this study is to solve simultaneously the equilibrium between the fluid flow and the movement of the solid. The choice was made to work with a VOF Navier-Stokes code and to use a penalty method by dynamic viscosity to simulate the presence of a rigid solid in the calculation domain. We have worked on the control of the non-deformation of the penalized fluid zone, on the stress of the movement of the fluid zone penalized with kinematical conditions, and also on the imposition of external damping and stiffness efforts via the acceleration term. After validating all the evolutions brought to the method, we realized the numerical study of two technological applications. The first one is the study of the active damping of a fluid inside a tank. In the second case we studied the performance of wave-energy based energy production system. These two cases showed the viability of the method to solve real practical cases.
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https://hal-univ-pau.archives-ouvertes.fr/tel-02375572
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Submitted on : Friday, November 22, 2019 - 9:46:01 AM
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  • HAL Id : tel-02375572, version 1

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Benoît Ducassou. Modélisation de l'interaction entre un fluide à surface libre et un solide rigide soumis à des efforts extérieurs par une méthode de pénalisation.. Mécanique des fluides [physics.class-ph]. Université de Pau et des Pays de l'Adour - Laboratoire SIAME, 2016. Français. ⟨tel-02375572⟩

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