UDF and turbulence

February 27, 2002, 14:19

Hi everyone.

I'm VERY new to UDF programming so this might be a rather stupid question for the experienced.

Anyway, here it is:

Is it possible to modify the C_mu value of the k-epsilon models with a UDF? If so, how is it done? I'm trying to make the C_mu value a function of local turbulence properties.

Thanks..

February 28, 2002, 03:46

I suppose You can't do it directly, but You could modify a Turbulent Viscosity (Fluent 6) and than You can set inside what You want (coefficients, function of arbitrary form etc).

February 27, 2002, 14:19	UDF and turbulence	#1
Gotfred Berntsen Guest Posts: n/a	Hi everyone. I'm VERY new to UDF programming so this might be a rather stupid question for the experienced. Anyway, here it is: Is it possible to modify the C_mu value of the k-epsilon models with a UDF? If so, how is it done? I'm trying to make the C_mu value a function of local turbulence properties. Thanks..

February 28, 2002, 03:46	Re: UDF and turbulence	#2
Michal Guest Posts: n/a	I suppose You can't do it directly, but You could modify a Turbulent Viscosity (Fluent 6) and than You can set inside what You want (coefficients, function of arbitrary form etc).

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