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Two‐level Preconditioner with Small Coarse Grid Appropriate for Unstructured Meshes
Author(s) -
Křížková Jitka,
Vaněk Petr
Publication year - 1996
Publication title -
numerical linear algebra with applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.02
H-Index - 53
eISSN - 1099-1506
pISSN - 1070-5325
DOI - 10.1002/(sici)1099-1506(199607/08)3:4<255::aid-nla77>3.0.co;2-2
Subject(s) - preconditioner , polygon mesh , grid , generalization , unstructured grid , convergence (economics) , mathematics , computer science , mathematical optimization , algorithm , computational science , geometry , iterative method , mathematical analysis , economic growth , economics
The presented paper contains a suggestion and an analysis of a two‐level preconditioner appropriate for unstructured meshes. The convergence analysis is done for H 1 ‐equivalent forms in the two‐dimensional case; ways for generalization are discussed, too. The efficiency is demonstrated by numerical experiments.