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Forum: Main CFD Forum

April 12, 2013, 11:27

Replies: 7

conjugate gradient squared method

Views: 1,796

Posted By rmh26

Incomplete lower upper factorizations worked well...

Incomplete lower upper factorizations worked well for me. I am working on a multigrid preconditioner in my spare time. It should increase the speed up but will require a little more work. Besides...

Forum: Main CFD Forum

April 10, 2013, 09:57

Replies: 7

conjugate gradient squared method

Views: 1,796

Posted By rmh26

BiCGSTAB is probably better than CGS in terms of...

BiCGSTAB is probably better than CGS in terms of stability. CGS tends to have irregular convergence. Both algorithms involve the same operations ( Matrix vectors, dot product, vector updates) so it...

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