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-   -   User-defined k or epsilon? (http://www.cfd-online.com/Forums/fluent-udf/69116-user-defined-k-epsilon.html)

tstorm October 12, 2009 13:45

User-defined k or epsilon?
 
Has anyone written successful UDF source equations for turbulence kinetic energy (k) or turbulence dissipation rate (epsilon)?

I've tried writing mine based on the k-e equations here (http://www.cfd-online.com/Wiki/Standard_k-epsilon_model) but velocity profiles in the boundary layer don't match the Blaussius curve.

Thanks!


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