arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2102.13315math.AP
收藏

关于可压缩Navier-斯托克斯方程时空周期线性化问题的谱性质

On the spectral properties for the linearized problem around space-time periodic states of the compressible Navier-Stokes equations

Mohamad Nor Azlan, Shota Enomoto, Yoshiyuki Kagei

摘要:

研究了在无限层$\mathbb{R}^n$($n=2,3$)中时空周期状态附近的可压缩斯托克斯方程的线性化问题,研究了线性化演化算子的谱性质.结果表明,当雷诺数和马赫数足够小时,对于小的Bloch参数,得到了Bloch变换线性化问题的Floquet指数在虚轴附近的渐近展开式,从而给出了线性化解算子的渐近前导部分为$t\rightarrow\infty$ .

英文摘要:

This paper studies the linearized problem for the compressible Navier-Stokes equation around space-time periodic state in an infinite layer of $\mathbb{R}^n$ ($n=2,3$), and the spectral properties of the linearized evolution operator is investigated. It is shown that if the Reynolds and Mach numbers are sufficiently small, then the asymptotic expansions of the Floquet exponents near the imaginary axis for the Bloch transformed linearized problem are obtained for small Bloch parameters, which would give the asymptotic leading part of the linearized solution operator as $t\rightarrow\infty$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑