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-   -   how to describe this boundary condtion in UDF? (http://www.cfd-online.com/Forums/fluent/94779-how-describe-boundary-condtion-udf.html)

litterfree November 25, 2011 04:39

how to describe this boundary condtion in UDF?
 
HI,can anyone help me?
i am now use the species transport model in FLUENT ,and i am use UDF.
how to describe this boundary condion use UDF: \partial c/\partial y=0

and how to describe this boundary condion use UDF:\partial c/\partial y+c=0

y is the normal vector of the boundary,c is concentration.

thank you


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