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-   -   Effective diffusivity k , k-epsilon model (http://www.cfd-online.com/Forums/openfoam/91890-effective-diffusivity-k-k-epsilon-model.html)

Eren10 August 25, 2011 10:41

Effective diffusivity k , k-epsilon model
 
Hi

in the effective diffusivity k, the sigma_k constant is left out. In the most cases its value is assumed to be 1.

Apparantly this term is not important. What is the reason behind it ? is it because the diffusivity is not known at all ?


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