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-   -   CFX Spalart Allmaras turbulence models (http://www.cfd-online.com/Forums/cfx/94253-cfx-spalart-allmaras-turbulence-models.html)

aweizazuji November 10, 2011 07:47

CFX Spalart Allmaras turbulence models
 
Hi,
I am using CFX13, But i cannot find Spalart Allmaras turbulence models. When i edited the ccl in the Command Editor, changing the TURBULENCE MODEL option to Spalart Allmaras(I do not know if this is right), it showed
"The parameter "Option" in "/FLOW:Flow Analysis 1/DOMAIN:Default Domain/FLUID MODELS/TURBULENCE MODEL" has the value "Spalart Allmaras". This does not match any of the allowed values: "Laminar, k epsilon, k epsilon EARSM, SST, ...".
I am not sure if i am using the so called Beta version. How to add Spalart Allmaras turbulence models in CFX.Thanks!!!!!

TWA November 10, 2011 08:12

(I assume) It's the one called Eddy Viscosity Transport Equation. Check the help files to confirm.

aweizazuji November 10, 2011 08:39

thanks for your reply,I will have a try.

Far November 10, 2011 09:17

It shall be shown in in CFX Pre once you enable the beta features.

check this out http://www.cfd-online.com/Forums/cfx...ras-model.html

aweizazuji November 10, 2011 09:39

Thanks ver much. How to enable the beta features?

Far November 10, 2011 09:52

Figures are attached at the very very last post in this thread http://www.cfd-online.com/Forums/cfx...chinery-3.html

aweizazuji November 10, 2011 09:53

Quote:

Originally Posted by Far (Post 331551)
It shall be shown in in CFX Pre once you enable the beta features.

check this out http://www.cfd-online.com/Forums/cfx...ras-model.html

I did the following steps to enable the beta features.
"start CFX-Pre and select Edit > Options. When the Options dialog appears, select CFX-Pre and check Enable Beta Features. Click OK to save the change. You will now be able to access the “beta visible” features listed below. "
Now I can still not be able to see the spalart-allmaras model.
Thanks!!!

Far November 10, 2011 09:57

you should be ;)

ghtunmun September 24, 2013 10:02

Hi everybody,
I'm trying to use the SA-model with cfx 14.5 but I don't know why the wall scale equation is resolved with this model. Am I making a mistake by defining my case or is it normal?

siw September 24, 2013 10:53

Neither the CFX Help or the Training Material from the ANSYS Customer Portal includes anything about the Spalart-Allmaras model since it remains a beta feature but in the CFX (14.5) Modeling Guide section 4.2 it says All turbulence models in CFX are suitable for a wall function method.


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