On a discrete framework of hypocoercivity for kinetic equations

Alain Blaustein; Francis Filbet

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arXiv · 2210.02107

On a discrete framework of hypocoercivity for kinetic equations

Alain Blaustein·Francis Filbet

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Abstract

We propose and study a fully discrete finite volume scheme for the Vlasov-Fokker-Planck equation written as an hyperbolic system using Hermite polynomials in velocity. This approach naturally preserves the stationary solution and the weighted L 2 relative entropy. Then, we adapt the arguments developed in [12] based the hypocoercivity method to get quantitative estimates on the convergence to equilibrium of the discrete solution. Finally, we prove that in the diffusive limit, the scheme is asymptotic preserving with respect to both the time variable and the scaling parameter at play.

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Alain Blaustein, Francis Filbet. 2022-10-05. On a discrete framework of hypocoercivity for kinetic equations. https://arxiv.org/abs/2210.02107

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