Veranstaltungen
Veranstaltungen der Fakultät für Mathematik
An Iterative Subgrid Method for Computing Flows in Highly Porous Media, als ans
Termin
06.01.2010, 11:00 - 12:30
Veranstaltungsort
M614
Abstract
A two-scale finite element method for solving Brinkmans
equations is presented. This system of equations models fluid flows in
highly porous media. Motivated by industrial applications we focus on
the case of these media having a complicated internal structure
represented by a heterogeneous permeability field. The method uses a
recently proposed discontinuous Galerkin FEM for Stokes equations by
Wang and Ye and the concept of subgrid approximation developed by
Arbogast for Darcys equations. In order to reduce boundary layer
errors and to ensure convergence to the global fine solution, the
algorithm is put in the framework of alternating Schwarz iterations
using subdomains around the coarse-grid boundaries. Several numerical
examples are presented to demonstrate the performance of this
iterative procedure.
Vortragende(r)
Dr. Jörg Willems
Herkunft der/des Vortragenden
Texas A&M University