LIU, Jian-Guo; MIEUSSENS, Luc

doi:10.1137/090772770

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LIU, Jian-Guo
department of mathematics

MIEUSSENS, Luc
Institut de Mathématiques de Bordeaux [IMB]

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SIAM Journal on Numerical Analysis. 2010, vol. 48, n° 4, p. 1474-1491

Society for Industrial and Applied Mathematics

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We present a mathematical analysis of the asymptotic preserving scheme proposed in [M. Lemou and L. Mieussens, SIAM J. Sci. Comput., 31, pp. 334-368, 2008] for linear transport equations in kinetic and diffusive regimes. We prove that the scheme is uniformly stable and accurate with respect to the mean free path of the particles. This property is satisfied under an explicitly given CFL condition. This condition tends to a parabolic CFL condition for small mean free paths, and is close to a convection CFL condition for large mean free paths. Ou r analysis is based on very simple energy estimates.< Réduire

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Analysis of an asymptotic preserving scheme for linear kinetic equations in the diffusion limit

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