Thu, 20 Jan 2011
12:30

Hydrodynamic limits, Knudsen layers and numerical fluxes

Thierry Goudon
(Lille 1 University)
Abstract

Considering kinetic equations (Boltzmann, BGK, say...) in the small mean free path regime lead to conservation laws (the Euler system, typically) When the problem is set in a domain, boundary layers might occur due to the fact that incoming fluxes could be far from equilibrium states. We consider the problem from a numerical perspective and we propose a definition of numerical fluxes for the Euler system which is intended to account for the formation of these boundary layers.

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