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I've written a program that solves the Poisson equation in

an irregular mesh, using a finite volume discretization.

the method works well, and the solution is very good at a

distance of 2-3 mesh sizes off of the source.

The problem is that I need to know what is the contribution

of the nodes to their neighbors- a place too close to have an

accurate solution (i.e. m/r)-

my question is, how could this be calculated? or- is there

a method to impose the influence to be m/r?

Thanks in advance,

Ariel.

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# Help with Poisson equation in irregular mesh

Can you offer guidance or do you also need help?

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