Viscous shock profile and singular limit for hyperbolic systems with Cattaneo's law

Tohru Nakamura, Shuichi Kawashima

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In the current paper, we consider large time behavior of solutions to scalar conservation laws with an artificial heat flux term. In the case where the heat flux is governed by Fourier's law, the equation is scalar viscous conservation laws. In this case, existence and asymptotic stability of one-dimensional viscous shock waves have been studied in several papers. The main concern in the current paper is a 2 × 2 system of hyperbolic equations with relaxation which is derived by prescribing Cattaneo's law for the heat flux. We consider the one-dimensional Cauchy problem for the system of Cattaneo-type and show existence and asymptotic stability of viscous shock waves. We also obtain the convergence rate by utilizing the weighted energy method. By letting the relaxation time zero in the system of Cattaneo-type, the system is formally deduced to scalar viscous conservation laws of Fourier-type. This is a singular limit problem which occurs an initial layer. We also consider the singular limit problem associated with viscous shock waves.

Original languageEnglish
Pages (from-to)795-819
Number of pages25
JournalKinetic and Related Models
Volume11
Issue number4
DOIs
Publication statusPublished - 2018 Jan 1
Externally publishedYes

Keywords

  • Initial layer
  • Relaxation limit
  • Scalar viscous conservation laws
  • Traveling waves
  • Weighted energy method

ASJC Scopus subject areas

  • Numerical Analysis
  • Modelling and Simulation

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