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arXiv · 2001.00834

Stability of large solutions for full compressible Navier-Stokes equations in the whole spaces

Lingbing He·Jingchi Huang·Chao Wang
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Abstract

The current paper is devoted to the investigation of the global-in-time stability of large solutions for the full Navier-Stokes-Fourier system in the whole space. Suppose that the density and the temperature are bounded from above uniformly in time in the Holder space $C^α$ with $α$ sufficiently small and in $L^\infty$ space respectively. Then we prove two results: (1). Such kind of the solution will converge to its associated equilibrium with a rate which is the same as that for the heat equation if we impose the same condition on the initial data. As a result, we obtain the propagation of positive lower bounds of the density and the temperature. (2). Such kind of the solution is stable, that is, any perturbed solution will remain close to the reference solution if initially they are close to each other. This shows that the set of the smooth and bounded solutions is open.

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Lingbing He, Jingchi Huang, Chao Wang. 2020-01-02. Stability of large solutions for full compressible Navier-Stokes equations in the whole spaces. https://arxiv.org/abs/2001.00834

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