My apologies.  I just found I could define spatially varying diffusion
coefficients.  Perhaps, this is even better as solving boundary conditions
in the middle of the mesh may be quite difficult and computationally
expensive.


On Tue, Oct 11, 2011 at 11:52 AM, list user <[email protected]> wrote:

> I am trying to define an obstruction (Diffusion=0) in the middle of a
> diffusing field using FiPy's boundaryCondition Module and I'm running into a
> bit of trouble.  Is this possible using FiPy version 2.1.2?  I have seen
> some comments about doing this using *constrain* but this is still begin
> tested under FiPy 2.2, correct?
>
> --Ben
>
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