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ILU Preconditioning with BiCGSTAB

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Old   October 15, 2004, 13:51
Default ILU Preconditioning with BiCGSTAB
Emmanuel O.B. Ogedengbe
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Hi, I am developing an iterative solver for Navier-Stoke equations with CVFEM using a preconditioned BiCGSTAB solver. Has anyone tried an ILU preconditioner within this context before?

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Old   October 16, 2004, 10:23
Default Re: ILU Preconditioning with BiCGSTAB
Angela Sunwoo
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Hi, Emmanuel...

The Krylov subspace method is a good choice, I think... but the other method... for example, the muitigrid method can give you more fast convergence.

- I had developed preconditioned BiCGSTAB solvers with severel precontioners.

- In my experiment, Jacobi, SSOR, IC, ILU and MILU were used as preconditioner. 'MILU' preconditioner is the best among them.

- whether your solver is coupled or not your strategy can be different.

- GMRES(m) with MILU preconditioner gave me 1.78 times faster than BiCGSTAB with MILU precontitioner in the driven cavity problem. The Segregated algorithm was used and 128*128 grids were used...

- Good Luck !!!
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Old   October 16, 2004, 16:26
Default Re: ILU Preconditioning with BiCGSTAB
Emmanuel Ogedengbe
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Hi, Angela, Thanks for this information. Emmanuel
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