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Diffusivity for different species in different zones

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Old   June 19, 2013, 03:22
Default Diffusivity for different species in different zones
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A-A Azarafza
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Hello guys
Does anyone have any idea how to define different diffusivities for different species in various zones e.g. porous and non porous zones? From FLUENT UDF manual, it can be inferred that DIFFUSIVITY macro can be used to define a given diffusivity that is used for all species, but how can I define different diffusivities for different species in different zones? Is it possible by using the mentioned macro?
It'll be highly appreciated for any suggestion
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