Centered-potential regularization for the advection upstream splitting method

Abstract : This paper is devoted to a centered IMEX scheme in a multidimensional framework for a wide class of multicomponent and isentropic flows. The proposed strategy is based on a regularized model where the advection velocity is modified by the gradient of the potential of the conservative forces in both mass and momentum equations. The stability of the scheme is ensured by the dissipation of mechanic energy, which stands for a mathematical entropy, under an advective CFL condition. The main physical properties, such as positivity, conservation of the total momentum, and conservation of the steady state at rest, are satisfied. In addition, asymptotic preserving properties in the regimes (“incompressible” and “acoustic”) are analyzed. Finally, several simulations are presented to illustrate our results in a simplified context of oceanic flows in one dimension.
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Soumis le : mercredi 21 septembre 2016 - 16:33:28
Dernière modification le : jeudi 18 janvier 2018 - 10:39:12

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  • HAL Id : hal-01152395, version 2

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Martin Parisot, Jean-Paul Vila. Centered-potential regularization for the advection upstream splitting method . SIAM Journal on Numerical Analysis, Society for Industrial and Applied Mathematics, 2016. 〈hal-01152395v2〉

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