Homogenization in perforated domains with rapidly pulsing perforations
ESAIM: Control, Optimisation and Calculus of Variations, Tome 9 (2003), pp. 461-483.

The aim of this paper is to study a class of domains whose geometry strongly depends on time namely. More precisely, we consider parabolic equations in perforated domains with rapidly pulsing (in time) periodic perforations, with a homogeneous Neumann condition on the boundary of the holes. We study the asymptotic behavior of the solutions as the period ε of the holes goes to zero. Since standard conservation laws do not hold in this model, a first difficulty is to get a priori estimates of the solutions. We obtain them in a weighted space where the weight is the principal eigenfunction of an “adjoint” periodic time-dependent eigenvalue problem. This problem is not a classical one, and its investigation is an important part of this work. Then, by using the multiple scale method, we construct the leading terms of a formal expansion (with respect to ε) of the solution and give the limit “homogenized” problem. An interesting peculiarity of the model is that, depending on the geometry of the holes, a large convection term may appear in the limit equation.

DOI : 10.1051/cocv:2003023
Classification : 35B27, 74Q10, 76M50
Mots-clés : homogenization, perforated domains, pulsing perforations, multiple scale method 
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Cioranescu, Doina; Piatnitski, Andrey L. Homogenization in perforated domains with rapidly pulsing perforations. ESAIM: Control, Optimisation and Calculus of Variations, Tome 9 (2003), pp. 461-483. doi : 10.1051/cocv:2003023. https://www.numdam.org/articles/10.1051/cocv:2003023/

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