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Theoretical derivation of Darcy's law for fluid flow in thin porous media (2004.07022v1)

Published 15 Apr 2020 in math.AP

Abstract: In this paper we study stationary incompressible Newtonian fluid flow in a thin porous media. The media under consideration is a bounded perforated $3D$ domain confined between two parallel plates. The description of the domain includes two small parameters: $\varepsilon$ representing the distance between pates and $a_\varepsilon$ connected to the microstructure of the domain such that $a_\varepsilon\ll \varepsilon$. We consider the classical setting of perforated media, i.e. $a_\varepsilon$-periodically distributed solid (not connected) obstacles of size $a_\varepsilon$. The goal of this paper is to introduce a version of the unfolding method, depending on both parameters $\varepsilon$ and $a_\varepsilon$, and then to derive the corresponding $2D$ Darcy's law.

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