A Twisted Block Tangential Filtering Decomposition Preconditioner | Zendy

Ruirui Wang | Zendy; Qiang Niu | Zendy; Linzhang Lu | Zendy

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A Twisted Block Tangential Filtering Decomposition Preconditioner

Author(s) -

Ruirui Wang,

Qiang Niu,

Linzhang Lu

Publication year - 2009

Publication title -

mathematical problems in engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.262

H-Index - 62

eISSN - 1026-7077

pISSN - 1024-123X

DOI - 10.1155/2009/282307

Subject(s) - preconditioner , algorithm , block (permutation group theory) , computer science , mathematics , geometry , iterative method

For block-tridiagonal linear system of equations, a variant of tangential filtering preconditioners is proposed in this paper. The new variant is based on a twisted block factorization along with certain filtering property. For practical usage, a class of composite preconditioners tested, which are constructed by combining the twisted tangential filtering decompositionpreconditioner with the classical ILU(0) preconditioner in a multiplicative way. The performanceof the new preconditioners is compared with other classical preconditioners; the superiority andthe weakness of the preconditioners are pointed out

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