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arXiv 2103.04323math.AP
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随机开孔区域中可压缩Navier-斯托克斯方程的发散逆与均匀化

Inverse of divergence and homogenization of compressible Navier-Stokes equations in randomly perforated domains

Peter Bella, Florian Oschmann

摘要:

本文分析了$\mathbb{R}^3$中有界区域内可压缩流体流动的弱解的行为。假设球的半径按$\varepsilon^α$、$α> 3$的比例缩放,其中$\varepsilon$表示球之间的平均距离,则问题用相同的限制方程均匀化。我们的主要贡献是构造了Bogovski \u ı运算符,在$\varepsilon$中统一,没有对球之间的最小距离进行任何假设。

英文摘要:

We analyze behavior of weak solutions to compressible fluid flows in a bounded domain in $\mathbb{R}^3$, randomly perforated by tiny balls with random size. Assuming the radii of the balls scale like $\varepsilon^α$, $α> 3$, with $\varepsilon$ denoting the average distance between the balls, the problem homogenize with the same limiting equation. Our main contribution is a construction of the Bogovski\uı operator, uniformly in $\varepsilon$, without any assumptions on the minimal distance between the balls.

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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