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arXiv 2211.04599math.AP
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可压缩导热粘性流体关于低马赫数极限区域的稳定性

Stability with respect to domain of the low Mach number limit of compressible heat-conducting viscous fluid

Aneta Wróblewska-Kamińska

摘要:

研究了当马赫数与小参数$\varepsilon \to 0$成正比,弗劳德数与$\sqrt{\varepsilon}$成正比,流体占据大区域且粗糙面空间障碍物变化时,当$\varepsilon \to 0$变化时,Navier-Stokes-Fourier方程组解的渐近极限.极限速度场为螺线管形,满足不可压Oberbeck-Boussinesq近似。我们的研究是基于弱解的方法,为了通过在对流项的限制,我们应用谱分析的相关波传播(诺依曼拉普拉斯)的运动的声波。

英文摘要:

We investigate the asymptotic limit of solutions to the Navier-Stokes-Fourier system with the Mach number proportional to a small parameter $\varepsilon \to 0$, the Froude number proportional to $\sqrt{\varepsilon}$ and when the fluid occupies large domain with spatial obstacle of rough surface varying when $\varepsilon \to 0$. The limit velocity field is solenoidal and satisfies the incompressible Oberbeck-Boussinesq approximation. Our studies are based on weak solutions approach and in order to pass to the limit in a convective term we apply the spectral analysis of the associated wave propagator (Neumann Laplacian) governing the motion of acoustic waves.

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。

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