Electron. J. Diff. Eqns., Vol. 2008(2008), No. 14, pp. 1-18.

Homogenized models for a short-time filtration in elastic porous media

Anvarbek M. Meirmanov

We consider a linear system of differential equations describing a joint motion of elastic porous body and fluid occupying porous space. The rigorous justification, under various conditions imposed on physical parameters, is fulfilled for homogenization procedures as the dimensionless size of the pores tends to zero, while the porous body is geometrically periodic and a characteristic time of processes is small enough. Such kind of models may describe, for example, hydraulic fracturing or acoustic or seismic waves propagation. As the results, we derive homogenized equations involving non-isotropic Stokes system for fluid velocity coupled with two different types of acoustic equations for the solid component, depending on ratios between physical parameters, or non-isotropic Stokes system for one-velocity continuum. The proofs are based on Nguetseng's two-scale convergence method of homogenization in periodic structures.

Submitted August 27, 2007. Published January 31, 2008.
Math Subject Classifications: 35M20, 74F10, 76S05.
Key Words: Stokes equations; Lame's equations; hydraulic fracturing; two-scale convergence; homogenization of periodic structures.

Show me the PDF file (300 KB), TEX file, and other files for this article.

Anvarbek M. Meirmanov
Department of mahtematics
Belgorod State University
ul. Pobedi 85, 308015 Belgorod, Russia
email: meirmanov@bsu.edu.ru

Return to the EJDE web page