Existence of semilinear relaxation shocks
Language
en
Article de revue
This item was published in
Journal de Mathématiques Pures et Appliquées. 2009, vol. 92, p. pp 209--231
Elsevier
English Abstract
We establish existence with sharp rates of decay and distance from the Chapman--Enskog approximation of small-amplitude shock profiles of a class of semilinear relaxation systems including discrete velocity models obtained ...Read more >
We establish existence with sharp rates of decay and distance from the Chapman--Enskog approximation of small-amplitude shock profiles of a class of semilinear relaxation systems including discrete velocity models obtained from Boltzmann and other kinetic equations. Our method of analysis is based on the macro--micro decomposition introduced by Liu and Yu for the study of Boltzmann profiles, but applied to the stationary rather than the time-evolutionary equations. This yields a simple proof by contraction mapping in weighted $H^s$ spaces.Read less <
English Keywords
shock profiles
relaxation
macro-micro decomposition
Chapman-Enskog approximation
energy methods
Origin
Hal imported