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Old   November 19, 2011, 20:17
Default Diffusion Equaton Fluent
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Nathan
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Hi

I want to model a pure mass diffusion equation (laplace Equation) with certain concentration and the inlet and outlet of a cube geometry.

How can I do that without having a concentration gradient from outlet toward the centre of the geometry.What should be the boundary conditions?

How can I calculate the molar diffusion flux at the inlet. The flux part of the Fluent can not be use because I set velocity as zero in the boundary conditions.

Thanks,
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