Specifying 'Stop Iteration' for SAS Averaging

Torque_Converter · November 15, 2013, 12:20

When running a SAS-SST turbulence model I recieve the following notice...

http://imgur.com/vfzP3YE

I know it is only a notice, and the simulation continues to run, but in case this is a part of some of the instability I see I would like to know where and how to adjust this stop iteration setting. But the information is not in any Ansys guide!

Does anyone have experience with where this setting is and how to assign an appropriate value?

Thank you

Lance · November 18, 2013, 02:56

If you are not interested in the Reynolds stresses then ignore it. In order to get statistically correct Re stresses (e.g. remove initial startup effects) one can delay the start of the averaging at: Output control/Trn stats/<new> /start/stop iteration list.

November 15, 2013, 12:20	Specifying 'Stop Iteration' for SAS Averaging	#1
Torque_Converter Member Join Date: Jan 2012 Location: Edmonton, CA Posts: 87 Rep Power: 14	When running a SAS-SST turbulence model I recieve the following notice... http://imgur.com/vfzP3YE I know it is only a notice, and the simulation continues to run, but in case this is a part of some of the instability I see I would like to know where and how to adjust this stop iteration setting. But the information is not in any Ansys guide! Does anyone have experience with where this setting is and how to assign an appropriate value? Thank you

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November 18, 2013, 02:56		#2
Lance Senior Member Lance Join Date: Mar 2009 Posts: 669 Rep Power: 22	If you are not interested in the Reynolds stresses then ignore it. In order to get statistically correct Re stresses (e.g. remove initial startup effects) one can delay the start of the averaging at: Output control/Trn stats/<new> /start/stop iteration list.