Title of article
Multilevel block ILU preconditioner for sparse nonsymmetric M-matrices
Author/Authors
Guessous، نويسنده , , N. and Souhar، نويسنده , , O.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
16
From page
231
To page
246
Abstract
We develop in this paper a multilevel block ILU preconditioner for solving sparse nonsymmetric M-matrices, arising from convection–diffusion equations, discretized by finite difference scheme. This preconditioner is based on recursive block ILU factorization, where the Schur complement matrices are successively approached by some sparse matrices satisfying some hypothesis. We study the preconditioned GMRES iterative method and multigrid method for solving linear systems arising from this scheme.
Keywords
Block incomplete LU factorization , Sparse approximate inverse , Schur Complement , Convection–diffusion equations , Sparse linear system
Journal title
Journal of Computational and Applied Mathematics
Serial Year
2004
Journal title
Journal of Computational and Applied Mathematics
Record number
1552403
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