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Homogenization of a non-homogeneous heat conducting fluid. (English) Zbl 1511.35276

A flow of nonhomogeneous heat conducting fluid is considered in a three dimensional perforated domain. Under the critical assumption on the holes: the diameter of the small holes proportional to the cube of their mutual distance, a homogenization result is proved in the limit of those quantities approaching \(0\). The limiting equation contains a friction term modeling the Brinckman law which depends on the viscosity and on the geometric structure of perforation.

MSC:

35Q35 PDEs in connection with fluid mechanics
76D05 Navier-Stokes equations for incompressible viscous fluids
35B27 Homogenization in context of PDEs; PDEs in media with periodic structure
35B40 Asymptotic behavior of solutions to PDEs
76M50 Homogenization applied to problems in fluid mechanics
74F10 Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.)
74M10 Friction in solid mechanics

References:

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