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Titel:

A new smoothed aggregation multigrid method for anisotropic problems

Dokumenttyp:
Zeitschriftenaufsatz
Autor(en):
Gee, M.W.; Hu, J.J.; Tuminaro, R.S.
Abstract:
A new prolongator is proposed for smoothed aggregation (SA) multigrid. The proposed prolongator addresses a limitation of standard SA when it is applied to anisotropic problems. For anisotropic problems, it is fairly standard to generate small aggregates (used to mimic semi-coarsening) in order to coarsen only in directions of strong coupling. Although beneficial to convergence, this can lead to a prohibitively large number of non-zeros in the standard SA prolongator and the corresponding coarse...     »
Stichworte:
AMG, multigrid, algebraic multigrid, smoothed aggregation, anisotropy
Dewey Dezimalklassifikation:
620 Ingenieurwissenschaften
Zeitschriftentitel:
Numerical Linear Algebra with Applications
Jahr:
2009
Band / Volume:
16
Heft / Issue:
1
Seitenangaben Beitrag:
19-37
Reviewed:
ja
Sprache:
en
Volltext / DOI:
doi:10.1002/nla.593
Status:
Verlagsversion / published
Semester:
SS 08
Format:
Text
 BibTeX