A two-level overlapping Schwarz method for H(curl) in two dimensions with irregular subdomains
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| Auteur: | |
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| Format: | artículo original |
| Date de publication: | 2015 |
| Description: | A bound is obtained for the condition number of a two-level overlapping Schwarz algorithm for problems posed in H(curl) in two dimensions, where the subdomains are only assumed to be John subdomains. The coarse space is based on energy minimization and its dimension equals the number of interior subdomain edges. Local direct solvers are used on the overlapping subdomains. Our bound depends only on a few geometric parameters of the decomposition. This bound is independent of jumps in the coefficients across the interface between the subdomains for most of the different cases considered. Numerical experiments that verify the result are shown, including some with subdomains with fractal edges and others obtained by a mesh partitioner. |
| Pays: | Kérwá |
| Institution: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/74617 |
| Accès en ligne: | http://etna.math.kent.edu/volumes/2011-2020/vol44/abstract.php?vol=44&pages=497-521 https://hdl.handle.net/10669/74617 |
| Mots-clés: | Domain decomposition overlapping Schwarz algorithms preconditioners irregular subdomain boundaries H(curl) Maxwell's equations discontinuous coefficients 65N55 65N30 65F10 35Q60 |