Stability of Riemann solutions with large oscillation for the relativistic Euler equations

JOURNAL OF DIFFERENTIAL EQUATIONS

卷:202

Article

Chen, GQ ; Li, YC

关键词: relativistic Euler equations;    special relativity;    discontinuous entropy solutions;    Riemann solutions;    uniqueness;    large-time stability;    Lorentz transformation;    scaling sequence;    compactness;   

DOI  :  10.1016/j.jde.2004.02.009

来源: Elsevier

【 摘 要 】

We are concerned with entropy solutions of the 2 x 2 relativistic Euler equations for perfect fluids in special relativity. We establish the uniqueness of Riemann solutions in the class of entropy solutions in L-infinity boolean ANDBV(loc) with arbitrarily large oscillation. Our proof for solutions with large oscillation is based on a detailed analysis of global behavior of shock curves in the phase space and on special features of centered rarefaction waves in the physical plane for this system. The uniqueness result does not require specific reference to any particular method for constructing the entropy solutions. Then the uniqueness of Riemann solutions yields their inviscid large-time stability under arbitrarily large L-1 boolean AND L-infinity boolean AND BVloc perturbation of the Riemann initial data, as long as the corresponding solutions are in L-infinity and have local bounded total variation that allows the linear growth in time. We also extend our approach to deal with the uniqueness and stability of Riemann solutions containing Vacuum in the class of entropy solutions in L-infinity with arbitrarily large oscillation. (C) 2004 Elsevier Inc. All rights reserved.

【 授权许可】

Free