Low Re SST model

Far · June 24, 2011, 05:36

Dear Frends

I want to enable the low reynolds number version of SST model. How to do this? I can only see the automatic wall treatment in the CFX pre.

Best Regards
Far

ghorrocks · June 24, 2011, 06:19

There is no Low Re version of SST. It does not need it as the k-omega based turbulence model works reasonably well at low Re with no modifications.

Far · June 24, 2011, 06:51

Quote:

Originally Posted by ghorrocks

There is no Low Re version of SST. It does not need it as the k-omega based turbulence model works reasonably well at low Re with no modifications.

Dear Ghorrocks,

I want to run the standard SST model without automatic wall treatment. The standard SST has the requirement of yplus less than 2 (as on the K omega model)

Far · June 25, 2011, 13:11

any help please?

a.ob · June 30, 2011, 12:00

http://www.cfd-online.com/Wiki/SST_k-omega_model

http://www.cfd-online.com/Wiki/Near-...k-omega_models

Do a search in the CFX help file and you will find a lot more information about the SST model and wall functions.

June 24, 2011, 05:36	Low Re SST model	#1
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	Dear Frends I want to enable the low reynolds number version of SST model. How to do this? I can only see the automatic wall treatment in the CFX pre. Best Regards Far

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June 24, 2011, 06:19		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	There is no Low Re version of SST. It does not need it as the k-omega based turbulence model works reasonably well at low Re with no modifications.

June 25, 2011, 13:11		#4
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	any help please?

June 30, 2011, 12:00		#5
a.ob New Member Andreas Join Date: Feb 2011 Location: Sweden Posts: 9 Rep Power: 15	http://www.cfd-online.com/Wiki/SST_k-omega_model http://www.cfd-online.com/Wiki/Near-...k-omega_models Do a search in the CFX help file and you will find a lot more information about the SST model and wall functions.