k-omega SST model constants

Bran · July 16, 2019, 22:22

Hello,

While working on my current project, I have come across model constants with k-omega SST. I am wondering where I can find an explanation on these constants and also if someone can provide an explanation of when they would need to be altered.

Thank you.

pete20r2 · July 16, 2019, 23:22

Hi Bran,
The best place to learn about turbulence models is often the original papers.
https://www.cfd-online.com/Wiki/SST_k-omega_model

Have a read of the article then check out the papers referenced at the end. There is typically a section on how the constants were selected and what their effect is.

LuckyTran · July 18, 2019, 11:51

It's good for your own learning what the constants are for.

But if you have to ask, then don't change the constants. Unless you are in the business of creating turbulence models, don't touch them. Are you a turbulence modeler or just a CFD user? If you're a user and not a modeler, leave it alone.

MIDHUN@CFD · July 22, 2019, 06:43

no need to change it .. will solve most cases

July 16, 2019, 22:22	k-omega SST model constants	#1
Bran New Member Join Date: Jul 2019 Posts: 27 Rep Power: 7	Hello, While working on my current project, I have come across model constants with k-omega SST. I am wondering where I can find an explanation on these constants and also if someone can provide an explanation of when they would need to be altered. Thank you. khaledhmz likes this.

July 16, 2019, 23:22		#2
pete20r2 Senior Member Peter Baskovich Join Date: Jul 2014 Posts: 127 Rep Power: 12	Hi Bran, The best place to learn about turbulence models is often the original papers. https://www.cfd-online.com/Wiki/SST_k-omega_model Have a read of the article then check out the papers referenced at the end. There is typically a section on how the constants were selected and what their effect is. khaledhmz and Bran like this.

July 18, 2019, 11:51		#3
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,751 Rep Power: 66	It's good for your own learning what the constants are for. But if you have to ask, then don't change the constants. Unless you are in the business of creating turbulence models, don't touch them. Are you a turbulence modeler or just a CFD user? If you're a user and not a modeler, leave it alone. MIDHUN@CFD and daku like this.

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July 22, 2019, 06:43		#4
MIDHUN@CFD Member MIDHUN Join Date: Nov 2012 Location: calicut Posts: 46 Rep Power: 13	no need to change it .. will solve most cases