Stability and decay rate of viscous contact wave to one-dimensional compressible Navier-Stokes equations

IF 1.2 4区 数学 Q2 MATHEMATICS, APPLIED
Xinxiang Bian, Lingling Xie
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引用次数: 0

Abstract

This paper studies the large-time asymptotic stability and optimal time-decay rate of viscous contact wave to one-dimensional compressible Navier–Stokes equations. We prove that one-dimensional compressible Navier–Stokes equations are asymptotically stable for viscous contact wave with arbitrarily large strength, under large initial perturbations. The time optimal decay rate of viscous contact wave is also obtained under the small initial perturbations. In the proof, the Lagrange transform is used to cancel the convection terms, which are difficult to estimate due to the lower spatial derivatives compared with the diffusion terms.
粘性接触波对一维可压缩纳维-斯托克斯方程的稳定性和衰减率
本文研究了粘性接触波对一维可压缩纳维-斯托克斯方程的大时间渐近稳定性和最佳时间衰减率。我们证明,在大的初始扰动下,一维可压缩 Navier-Stokes 方程对于任意大强度的粘性接触波是渐近稳定的。在小的初始扰动下,还得到了粘性接触波的时间最优衰减率。在证明过程中,使用了拉格朗日变换来消除对流项,与扩散项相比,对流项的空间导数较低,难以估计。
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来源期刊
CiteScore
1.70
自引率
10.00%
发文量
59
审稿时长
6 months
期刊介绍: Covers modern applied mathematics in the fields of modeling, applied and stochastic analyses and numerical computations—on problems that arise in physical, biological, engineering, and financial applications. The journal publishes high-quality, original research articles, reviews, and expository papers.
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