Finite Difference Solution to Poisson's Equation on Irregular Domain

[Morberticus]

Hi,

Are there any open source C or Fortran libraries for solving 3D Poisson'sequation on an irrefular domain? I'm having difficulty finding them.

If not, is there any papers or recipes that would be useful so I could write my own? Speed is not a priority, I just need anything that works.

Thanks

 

[SteamKing]

Even with this question, Google is your friend:

http://people.sc.fsu.edu/~jburkardt/f77_src/fishpack/fishpack.html

The FISHPACK library should give you a good starting point.

 

[AlephZero]

The FISHPACK library should give you a good starting point.

... except it only handles regular domains and grids (in several different coordinate systems).

If you want to solve in a completely arbitrary region, I would look for a finite element or finite volume code. Google is your friend, again.