Viscosity method for homogenization of parabolic nonlinear equations in perforated domains

JOURNAL OF DIFFERENTIAL EQUATIONS

卷:251

Article

Kim, Sunghoon¹  Lee, Ki-Ahm¹ 

[1] Seoul Natl Univ, Sch Math Sci, Seoul 151747, South Korea

关键词: Homogenization;    Perforated domain;    Corrector;    Fully nonlinear parabolic equations;    Porous medium equation;   

DOI  :  10.1016/j.jde.2011.07.014

来源: Elsevier

【 摘 要 】

In this paper, we develop a viscosity method for homogenization of Nonlinear Parabolic Equations constrained by highly oscillating obstacles or Dirichlet data in perforated domains. The Dirichlet data on the perforated domain can be considered as a constraint or an obstacle. Homogenization of nonlinear eigen value problems has been also considered to control the degeneracy of the porous medium equation in perforated domains. For the simplicity, we consider obstacles that consist of cylindrical columns distributed periodically and perforated domains with punctured balls. If the decay rate of the capacity of columns or the capacity of punctured ball is too high or too small, the limit of u(epsilon) will converge to trivial solutions. The critical decay rates of having nontrivial solution are obtained with the construction of barriers. We also show the limit of u(epsilon) satisfies a homogenized equation with a term showing the effect of the highly oscillating obstacles or perforated domain in viscosity sense. (C) 2011 Elsevier Inc. All rights reserved.

【 授权许可】

Free