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Journal Articles Chinese Annals of Mathematics - Series B Year : 2011

Global existence to the equilibrium diffusion model in radiative hydrodynamics

Abstract

This paper is devoted to the analysis of the Cauchy problem for a system of PDEs arising in radiative hydrodynamics. This system, which comes from the so-called equilibrium diffusion regime, is a variant of the usual Euler equations, where the energy and pressure functionals are modified to take into account the effect of radiation and the energy balance containing a nonlinear diffusion term acting on the temperature. The problem is studied in the multi-dimensional framework. The authors identify the existence of a strictly convex entropy and a stability property of the system, and check that the Kawashima-Shizuta condition holds. Then, based on these structure properties, the well-posedness close to a constant state can be proved by using fine energy estimates. The asymptotic decay of the solutions are also investigated.

Dates and versions

hal-00905333 , version 1 (18-11-2013)

Identifiers

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Thierry Goudon, Chunjin Lin. Global existence to the equilibrium diffusion model in radiative hydrodynamics. Chinese Annals of Mathematics - Series B, 2011, 32 (4), pp.549--568. ⟨10.1007/s11401-011-0658-z⟩. ⟨hal-00905333⟩
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