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arXiv · 2406.03268

Relative Entropy for the Numerical Diffusive Limit of the Linear Jin-Xin System

Marianne Bessemoulin-Chatard·Hélène Mathis
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Abstract

This paper deals with the diffusive limit of the Jin and Xin model and its approximation by an asymptotic preserving finite volume scheme. At the continuous level, we determine a convergence rate to the diffusive limit by means of a relative entropy method. Considering a semi-discrete approximation (discrete in space and continuous in time), we adapt the method to this semi-discrete framework and establish that the approximated solutions converge towards the discrete convection-diffusion limit with the same convergence rate.

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Marianne Bessemoulin-Chatard, Hélène Mathis. 2024-06-05. Relative Entropy for the Numerical Diffusive Limit of the Linear Jin-Xin System. https://arxiv.org/abs/2406.03268

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