A comparison of force computations for modeling fluid - structure interaction problems with the lattice Boltzmann volume penalisation method - Archive ouverte HAL
Article Dans Une Revue Discrete and Continuous Dynamical Systems - Series S Année : 2024

A comparison of force computations for modeling fluid - structure interaction problems with the lattice Boltzmann volume penalisation method

Résumé

In this article, the capability of the VP-LBM (Volume Penalization -Lattice Boltzmann Method) is explored on new cases whose studied physics is quite different from previous work, and the use of fluid force calculation methods within the VP-LBM framework is discussed. The first method, the momentum exchange method, uses the variation of distribution functions near the fluid-solid interface, while the second, the stress integration method, allows the direct integration of fluid forces on this interface. Applied to the VP-LBM, which involves penalizing the solid in the LBM, these two methods can lead to significantly different results. Tests were carried out to investigate the lift and drag coefficients of a NACA 0012 profile at different angles of attack, Reynolds number 1000, an energy extraction system consisting of a translating and rotating foil, and finally the sedimentation of particles under the effect of gravity in a very low Reynolds number channel.

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Dates et versions

hal-04772549 , version 1 (08-11-2024)

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Erwan Liberge, Claudine Béghein. A comparison of force computations for modeling fluid - structure interaction problems with the lattice Boltzmann volume penalisation method. Discrete and Continuous Dynamical Systems - Series S, 2024, 17, pp.2420 - 2435. ⟨10.3934/dcdss.2023200⟩. ⟨hal-04772549⟩
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