CFX Spalart Allmaras turbulence models

aweizazuji · November 10, 2011, 06:47

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

efault 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, 07:12

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

aweizazuji · November 10, 2011, 07:39

thanks for your reply,I will have a try.

Far · November 10, 2011, 08:17

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, 08:39

Thanks ver much. How to enable the beta features?

Far · November 10, 2011, 08:52

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, 08:53

Quote:

Originally Posted by Far

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, 08:57

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.

November 10, 2011, 06:47	CFX Spalart Allmaras turbulence models	#1
aweizazuji New Member LL Join Date: Jun 2011 Posts: 17 Rep Power: 14	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/DOMAINefault 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!!!!!

November 10, 2011, 08:17		#4
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	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 mahdi6788 likes this.

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November 10, 2011, 07:12		#2
TWA New Member Join Date: Sep 2011 Location: Norway Posts: 11 Rep Power: 14	(I assume) It's the one called Eddy Viscosity Transport Equation. Check the help files to confirm.

November 10, 2011, 07:39		#3
aweizazuji New Member LL Join Date: Jun 2011 Posts: 17 Rep Power: 14	thanks for your reply,I will have a try.

November 10, 2011, 08:39		#5
aweizazuji New Member LL Join Date: Jun 2011 Posts: 17 Rep Power: 14	Thanks ver much. How to enable the beta features?

November 10, 2011, 08:52		#6
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	Figures are attached at the very very last post in this thread http://www.cfd-online.com/Forums/cfx...chinery-3.html

November 10, 2011, 08:57		#8
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	you should be

September 24, 2013, 10:02		#9
ghtunmun New Member Ghaith Join Date: Aug 2013 Posts: 5 Rep Power: 12	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?

September 24, 2013, 10:53		#10
siw Senior Member Stuart Join Date: Jul 2009 Location: Portsmouth, England Posts: 733 Rep Power: 25	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.