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

Authors :
Bella, Peter
Oschmann, Florian
Publication Year :
2021

Abstract

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 $\varepsilon^\alpha$, $\alpha > 3$, 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\u{\i} operator, uniformly in $\varepsilon$, without any assumptions on the minimal distance between the balls.<br />Comment: Corrected moment bound assumption on the radii

Subjects

Subjects :
Mathematics - Analysis of PDEs

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2103.04323
Document Type :
Working Paper