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Anisotropic Diffusivity

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Old   August 8, 2012, 15:21
Default Anisotropic Diffusivity
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Erica
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Hi Everyone,

Does anyone know how to specify an anisotropic diffusivity tensor for the fluid (not a user-defined scalar)? All I can find is the DEFINE_DIFFUSIVITY macro and since it only returns one real, I'm not sure what to do.

Thanks a lot!
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Old   August 9, 2012, 12:26
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I have the same problem, what I can think of is to solve the species balance equation as an UDS and then define directional diffusivity (anisotropic) using DEFINE_DIFFUSIVITY.

please let me know if you find any way.
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Old   March 29, 2013, 08:01
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Quote:
Originally Posted by ziglat2004 View Post
I have the same problem, what I can think of is to solve the species balance equation as an UDS and then define directional diffusivity (anisotropic) using DEFINE_DIFFUSIVITY.

please let me know if you find any way.
That's what I'm trying to do and I hope it works.
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Last edited by A CFD free user; March 29, 2013 at 15:21.
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