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Old   June 22, 2012, 06:19
Default user-defined turbulence model
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Can anyone help me how to implement user-defined turbulence mode.
For example I dont have V2F model in my Fluent. So could anyone help me how to implement V2F model in Fluent using user-defined.

I was trying last one month...Many thanks in advance..
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Old   June 25, 2012, 03:15
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hello,
you can use the v2f model through TUI

Best regards
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Old   June 25, 2012, 04:22
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Sir, Thank you very much for your reply.
I have seen the commands
define/models/viscous/user-defined/
after this, Could you explain how to give the damping functions etc...
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Old   June 25, 2012, 04:32
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are you talking about the near wall treatment?
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Old   June 25, 2012, 04:36
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No. there are plenty of low-re-turbulence models available. Howver In fluent only 6 low-re-turbulence model is available. If I want to use user-defined low-re-turbulence model. Then how to use that model in Fluent.
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Old   June 25, 2012, 04:36
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in my version of Fluent (v.13) the v2f model already exists (with the command define/models/viscous/user-defined/v2f? yes)
If you have a previous version I don't know how set-up it by UDF...
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Old   June 25, 2012, 05:01
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Thank you very much for your reply.
I am using same version Ansys-Fluent 13, when i enter the below lines are coming..
/define/models/viscous> user-defined
Viscous user-defined functions: ("none")
Enter turbulent viscosity function ["none"]
Enter TKE Prandtl number function ["none"]
Enter TDR Prandtl number function ["none"]
Enter Energy Prandtl number function ["none"]
Enter Wall Prandtl number function ["none"]
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Old   June 25, 2012, 05:36
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sorry, I made a mistake
the command is define/models/viscous/v2f?
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Old   June 25, 2012, 07:53
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Ok. I dont have this option in viscous. In help it was mentioned that
user-defined-transition/v2f can be enable. But I dont have user-defined-transition
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