Factorized parallel preconditioner for the saddle point problem
β Scribed by B. S. Lazarov; O. Sigmund
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2009
- Tongue
- English
- Weight
- 128 KB
- Volume
- 27
- Category
- Article
- ISSN
- 2040-7939
- DOI
- 10.1002/cnm.1366
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π SIMILAR VOLUMES
## Abstract A class of constraint preconditioners for solving twoβbyβtwo block linear equations with the (1,2)βblock being the transpose of the (2,1)βblock and the (2,2)βblock being zero was investigated in a recent paper of Cao (__Numer. Math.__ 2006; **103**:47β61). In this short note, we extend
Three domain decomposition methods for saddle point problems are introduced and compared. The first two are blockdiagonal and block-triangular preconditioners with diagonal blocks approximated by an overlapping Schwarz technique with positive definite local and coarse problems. The third is an overl
## Abstract The (mixed finite element) discretization of the linearized NavierβStokes equations leads to a linear system of equations of saddle point type. The iterative solution of this linear system requires the construction of suitable preconditioners, especially in the case of high Reynolds num