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Help with Poisson equation in irregular mesh

  1. Jul 18, 2010 #1
    Hi all,

    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,
  2. jcsd
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