数学物理学报(英文版) ›› 2018, Vol. 38 ›› Issue (3): 973-1000.doi: 10.1016/S0252-9602(18)30797-5

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NONLINEAR STABILITY OF VISCOUS SHOCK WAVES FOR ONE-DIMENSIONAL NONISENTROPIC COMPRESSIBLE NAVIER-STOKES EQUATIONS WITH A CLASS OF LARGE INITIAL PERTURBATION

唐少君, 张澜   

  1. School of Mathematics and Statistics, Wuhan University, Wuhan 430072, China
  • 收稿日期:2017-05-31 出版日期:2018-06-25 发布日期:2018-06-25
  • 通讯作者: Lan ZHANG E-mail:zhang_lan@whu.edu.cn
  • 作者简介:Shaojun TANG,E-mail:shaojun.Tang@whu.edu.cn
  • 基金资助:

    This work is supported by the NSFC (1671309).

NONLINEAR STABILITY OF VISCOUS SHOCK WAVES FOR ONE-DIMENSIONAL NONISENTROPIC COMPRESSIBLE NAVIER-STOKES EQUATIONS WITH A CLASS OF LARGE INITIAL PERTURBATION

Shaojun TANG, Lan ZHANG   

  1. School of Mathematics and Statistics, Wuhan University, Wuhan 430072, China
  • Received:2017-05-31 Online:2018-06-25 Published:2018-06-25
  • Contact: Lan ZHANG E-mail:zhang_lan@whu.edu.cn
  • Supported by:

    This work is supported by the NSFC (1671309).

摘要:

We study the nonlinear stability of viscous shock waves for the Cauchy problem of one-dimensional nonisentropic compressible Navier-Stokes equations for a viscous and heat conducting ideal polytropic gas. The viscous shock waves are shown to be time asymptotically stable under large initial perturbation with no restriction on the range of the adiabatic exponent provided that the strengths of the viscous shock waves are assumed to be sufficiently small.The proofs are based on the nonlinear energy estimates and the crucial step is to obtain the positive lower and upper bounds of the density and the temperature which are uniformly in time and space.

关键词: One-dimensional nonisentropic compressible Navier-Stokes equations, viscous shock waves, nonlinear stability, large initial perturbation

Abstract:

We study the nonlinear stability of viscous shock waves for the Cauchy problem of one-dimensional nonisentropic compressible Navier-Stokes equations for a viscous and heat conducting ideal polytropic gas. The viscous shock waves are shown to be time asymptotically stable under large initial perturbation with no restriction on the range of the adiabatic exponent provided that the strengths of the viscous shock waves are assumed to be sufficiently small.The proofs are based on the nonlinear energy estimates and the crucial step is to obtain the positive lower and upper bounds of the density and the temperature which are uniformly in time and space.

Key words: One-dimensional nonisentropic compressible Navier-Stokes equations, viscous shock waves, nonlinear stability, large initial perturbation