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dsanthosh2 June 22, 2012 06:19

user-defined turbulence model
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..

Bionico June 25, 2012 03:15

you can use the v2f model through TUI :)

Best regards

dsanthosh2 June 25, 2012 04:22

Sir, Thank you very much for your reply.
I have seen the commands
after this, Could you explain how to give the damping functions etc...

Far June 25, 2012 04:32

are you talking about the near wall treatment?

dsanthosh2 June 25, 2012 04:36

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.

Bionico June 25, 2012 04:36

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...:(

dsanthosh2 June 25, 2012 05:01

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"]

Bionico June 25, 2012 05:36

sorry, I made a mistake
the command is define/models/viscous/v2f? :)

dsanthosh2 June 25, 2012 07:53

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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