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-   -   how to use the different turbulance model in one case? (http://www.cfd-online.com/Forums/fluent/115450-how-use-different-turbulance-model-one-case.html)

GJ_hit March 31, 2013 11:31

how to use the different turbulance model in one case?
 
Hello everyone
I want to use the different turbulance in one case , before the transistion point,I want to use the laminar model ,after that use turbulace model.
once i saw someone do like this. Do i need use the UDF? Which macro should i use?


thank you for your attention! Need your help.

Ebrahim March 31, 2013 12:12

Hi
You can divide your domain to 2 separate part. These parts are separated at the transition point. In the viscous model panel, choose the appropriate turbulence model. Then in the boundary condition panel, where you have 2 fluid zones choose the one that you want to be treated as a laminar zone. In the related panel just check (activate) the "laminar zone" option.
Wish it can help you
Ebrahim


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