CFD Online Discussion Forums

CFD Online Discussion Forums (
-   FLUENT (
-   -   UDF Cmu change (

selçuk ataş September 26, 2008 07:16

UDF Cmu change
hello, cmu value in k-e turbulence models is constant. i want to write a udf to change turbulent viscosity, in which cmu is a function of some derivatives.. can i change cmu in this udf and such that the cmu defined in user defined panel doesnt work and the cmu in my udf is used in the computation. plz help me in this thanking u

Lourival September 29, 2008 14:16

Re: UDF Cmu change
Dear Seluk,

I'm afraid that it won't work, because the UDF of viscosity will surpress only the turbulent viscosity from the k-e and not the cmu cte. You can calculate inside your UDF and use it to estipulate your viscosity, but I'm quite sure that it won't change the constant inserted from the user.

Best regards

Lourival Mendes

All times are GMT -4. The time now is 18:07.