INTEC   05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
Interface Strip Preconditioner for Domain Decomposition Methods
Autor/es:
MARIO STORTI; LISANDRO DALCÍN; RODRIGO PAZ; ANDREA YOMMI; VICTORIO SONZOGNI; NORBERTO NIGRO
Revista:
Journal of Computational Methods in Sciences and Engineering
Editorial:
IOS Press
Referencias:
Lugar: Amsterdam, The Netherlands; Año: 2006
ISSN:
1472-7978
Resumen:
A preconditioner for iterative solution of the interface problem in Schur ComplementDomain Decomposition Methods is presented. This preconditioner is based on solving a problem in a narrow strip around the interface. It requires much less memory and computing time than classical Neumann-Neumann preconditioner and its variants, and handles correctly the flux splitting among subdomains that share the interface. The performance of this preconditioner is assessed with an analytical study of Schur complement matrix eigenvalues. Results in a production parallel finite element code are given in a companion paper [1].