CONVERGENCE OF THE LATTICE BOLTZMANN METHOD WITH OVERRELAXATION FOR A NONLINEAR CONSERVATION LAW
AREGBA-DRIOLLET, Denise
Institut de Mathématiques de Bordeaux [IMB]
Institut Polytechnique de Bordeaux [Bordeaux INP]
Institut de Mathématiques de Bordeaux [IMB]
Institut Polytechnique de Bordeaux [Bordeaux INP]
AREGBA-DRIOLLET, Denise
Institut de Mathématiques de Bordeaux [IMB]
Institut Polytechnique de Bordeaux [Bordeaux INP]
< Réduire
Institut de Mathématiques de Bordeaux [IMB]
Institut Polytechnique de Bordeaux [Bordeaux INP]
Langue
en
Document de travail - Pré-publication
Ce document a été publié dans
2023-11-20
Résumé en anglais
We approximate a nonlinear multidimensional conservation law by Lattice Boltzmann Methods (LBM). We use underlying BGK type systems with finite number of velocities discretized by a transport-collision scheme. The collision ...Lire la suite >
We approximate a nonlinear multidimensional conservation law by Lattice Boltzmann Methods (LBM). We use underlying BGK type systems with finite number of velocities discretized by a transport-collision scheme. The collision part involves a relaxation parameter ω which value greatly influences the stability and accuracy of the method, as noted by many authors. In this article we clarify the relationship between ω and the parameters of the kinetic model and we highlight some new monotony properties which allow us to extend the previously obtained stability and convergence results. Numerical experiments are performed.< Réduire
Mots clés en anglais
1991 Mathematics Subject Classification. 65M12 -35L60 -65M08
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