Recommendation of a good poisson solver

November 29, 2005, 03:12

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!

November 29, 2005, 03:15

Oh btw, I forgot to add that I am solving a 9pt poisson eqns.

Thanks

December 2, 2005, 10:12

please google: a 9-point multigrid elliptic equation solver "mgd9v"

November 29, 2005, 03:12	Recommendation of a good poisson solver	#1
Quarkz Guest Posts: n/a	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!

November 29, 2005, 03:15	Re: Recommendation of a good poisson solver	#2
Quarkz Guest Posts: n/a	Oh btw, I forgot to add that I am solving a 9pt poisson eqns. Thanks

December 2, 2005, 10:12	Re: Recommendation of a good poisson solver	#3
versi Guest Posts: n/a	please google: a 9-point multigrid elliptic equation solver "mgd9v"

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