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Diffusion Coefficient in porous material

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Old   July 23, 2009, 03:48
Default Diffusion Coefficient in porous material
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Munir Ahmed Khan
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Hi Guys!
I have a simple quaestion. If I define the diffusion coefficient of a species mixture using UDF in a porous material, do I have to multiply the coefficient with porosity in the UDF or fluent will do itself.

Urgent.

Regards,
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