1. Enhanced GMRES Acceleration Techniques for some CFD Problems.
- Author
-
Souläimani, Azzeddine, Salah, Nizar Ben, and Saad, Yousef
- Subjects
- *
MAGNETOHYDRODYNAMICS , *LINEAR differential equations , *LINEAR systems , *ALGORITHMS , *NUMERICAL analysis , *ITERATIVE methods (Mathematics) - Abstract
Large linear systems arising in CFD problems are often solved using iterative methods which typically combine an accelerator such as GMRES and a preconditioner. This paper presents results using several preconditioning techniques, which are not standard in CFD. Numerical tests are carried out for solving three-dimensional incompressible, compressible and magnetohydrodynamic (MHD) problems. A selection of numerical results is presented showing in particular that the flexible GMRES algorithm preconditioned with ILUT factorization provides a fairly robust iterative solver. [ABSTRACT FROM AUTHOR]
- Published
- 2002