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-   -   Recommendation of a good poisson solver (http://www.cfd-online.com/Forums/main/10377-recommendation-good-poisson-solver.html)

Quarkz November 29, 2005 03:12

Recommendation of a good poisson solver
 
Hi,

I was initially using the NSPCG sparse solver for my FVM momentum & poisson eqns. It can solve the momentum eqn very fast. However, I found that the results have some problems with the poisson eqns.

Hence, I am now looking for a new sparse solver package to solve my poisson eqn. I am using structured grids with non-uniform grids. Code is in F90

Is it true that the "fast poisson solvers" (mudpack?) or FFT types are faster than the general iteration solvers?

Hope that someone can recommend a suitable solver based on my requirement.

Thanks!

Quarkz November 29, 2005 03:15

Re: Recommendation of a good poisson solver
 
Oh btw, I forgot to add that I am solving a 9pt poisson eqns.

Thanks

versi December 2, 2005 10:12

Re: Recommendation of a good poisson solver
 
please google: a 9-point multigrid elliptic equation solver "mgd9v"


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