Numerical homogenization of non-linear parabolic problems on adaptive meshes

We propose an efficient numerical strategy for solving non-linear parabolic problems defined in a heterogeneous porous medium. This scheme is based on the classical homogenization theory and uses a locally mass-conservative formulation at different scales. In addition, we discuss some properties of the proposed non-linear solvers and use an error indicator to perform a local mesh refinement. The main idea is to compute the effective parameters in such a way that the computational complexity is reduced but preserving the accuracy. We illustrate the behavior of the homogenization scheme and of the non-linear solvers by performing two numerical tests. We consider both a quasi-periodic example and a problem involving strong heterogeneities in a non-periodic medium.

Publication year:2021

Keywords:Flow in porous media, Homogenization, Mesh refinement, Non-linear solvers, MFEM

BOF-keylabel:yes

IOF-keylabel:yes

BOF-publication weight:6

Authors:International

Authors from:Higher Education

Accessibility:Closed