Incomplete block factorization preconditioning for indefinite elliptic problems
β Scribed by Chun-Hua Guo
- Publisher
- Springer-Verlag
- Year
- 1999
- Tongue
- English
- Weight
- 124 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0029-599X
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π SIMILAR VOLUMES
Incomplete factorization preconditioners based on recursive red-black orderings have been shown efficient for discrete second order elliptic PDEs with isotropic coefficients. However, they suffer for some weakness in presence of anisotropy or grid stretching. Here we propose to combine these orderin
## Abstract A new class of preconditioners based on the adaptive threshold incomplete multifrontal factorization for indefinite and complex symmetric systems is developed. Numerical experiments consisting of the 3D Helmholtz equations, fluidβstructure interaction and localization problems demonstra