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Discretization problem of diffusion equation

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Old   September 9, 2009, 10:24
Default Discretization problem of diffusion equation
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Dear friends:
I am trying to solve the heat diffusion equation on a unstrucured cartesion grid sytems. i do not know how to discretize it when one cell has two neighbours on one side. I use the fvm method.
Coudl you please give me some information on that.
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