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Existence and homogenization of the Rayleigh-B\'enard problem

Björn Birnir·Nils Svanstedt
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Abstract

The Navier-Stokes equation driven by heat conduction is studied. As a prototype we consider Rayleigh-B\'enard convection, in the Boussinesq approximation. Under a large aspect ratio assumption, which is the case in Rayleigh-B\'enard experiments with Prandtl number close to one, we prove the existence of a global strong solution to the 3D Navier-Stokes equation coupled with a heat equation, and the existence of a maximal B-attractor. A rigorous two-scale limit is obtained by homogenization theory. The mean velocity field is obtained by averaging the two-scale limit over the unit torus in the local variable.

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Björn Birnir, Nils Svanstedt. 2000-04-01. Existence and homogenization of the Rayleigh-B\'enard problem. https://doi.org/10.2991/jnmp.2000.7.2.6

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