CFD Online Discussion Forums - Coefficients in the Launder-Sharma damping function in kEpsilon model

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backscatter

December 7, 2021 07:52

Coefficients in the Launder-Sharma damping function in kEpsilon model

Hi,

I was reading up some material on low Re kEpsilon model and I observed that many versions of the Launder Sharma damping function exist differing in its coefficients. For example, one version I saw reads,

$f_{\mu }= exp(-3.4/(1+R_T/50)^2)$

and the other, slightly different version reads,

$f_{\mu }= exp(-2.5/(1+R_T/50)^2)$

Is it normal for people to adjust its coefficients?

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