One-Dimensional Compressible Heat-Conducting Gas with Temperature-Dependent Viscosity

Abstract

We consider the one-dimensional compressible Navier--Stokes system for a viscous and heat-conducting ideal polytropic gas when the viscosity $\mu$ and the heat conductivity $\kappa$ depend on the specific volume $v$ and the temperature $\theta$ and are both proportional to $h(v){\theta }^{\alpha }$ for certain non-degenerate smooth function $h$. We prove the existence and uniqueness of a global-in-time non-vacuum solution to its Cauchy problem under certain assumptions on the parameter $\alpha$ and initial data, which imply that the initial data can be large if $|\alpha |$ is sufficiently small. Our result appears to be the first global existence result for general adiabatic exponent and large initial data when the viscosity coefficient depends on both the density and the temperature.

To appear in "Mathematical Models and Methods in Applied Sciences"; Contact [email protected] for any comments

References in corpus (3)

• Vanishing of vacuum states and blow-up phenomena of the compressible Navier-Stokes equations
• Some Uniform Estimates and Large-Time Behavior for One-Dimensional Compressible Navier-Stokes System in Unbounded Domains with Large Data
• Stability of stationary solutions to the outflow problem for full compressible Navier-Stokes equations with large initial perturbation

Cited by in corpus (2)

• Symmetric flows for compressible heat-conducting fluids with temperature dependent viscosity coefficients
• Nonlinear stability of rarefaction waves for a viscous radiative and reactive gas with large initial perturbation