Turbulence Models

oborona · May 25, 2012, 03:35

Hello!

Can I use two turbulence models in the one domain?

Far · May 25, 2012, 06:29

No. Not possible.

SST is combination of two models : K-Epsilon and K-omega, but only limited to core flow and boundary layer respectively.

oborona · May 25, 2012, 06:47

Thanks. it is a pity. I can't use SST model to model flow with combustion.

Far · May 25, 2012, 07:02

However you can choose DES or DDES model. Also you can go for Embedded LES (E-LES)

macfly · May 25, 2012, 23:39

Quote:

Originally Posted by oborona

Thanks. it is a pity. I can't use SST model to model flow with combustion.

Hi,

Why can't you use SST for combustion? I'm about to start my turbulent combustion modeling, I'm in the process of choosing my model. And if I start Fluent and I choose the k-w SST turbulence model, most of combustion models are still available (from a quick look).

I'm probably missing something... can you please to enlighten me?

oborona · May 28, 2012, 06:36

I think I was wrong. I have the out-dated information that combustion models need the epsilon-equation but not omega-equation. But as was found I can use SST model with combustion.

May 25, 2012, 03:35	Turbulence Models	#1
oborona New Member Helen Join Date: Apr 2012 Posts: 17 Rep Power: 14	Hello! Can I use two turbulence models in the one domain?

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May 25, 2012, 06:29		#2
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	No. Not possible. SST is combination of two models : K-Epsilon and K-omega, but only limited to core flow and boundary layer respectively.

May 25, 2012, 06:47		#3
oborona New Member Helen Join Date: Apr 2012 Posts: 17 Rep Power: 14	Thanks. it is a pity. I can't use SST model to model flow with combustion.

May 25, 2012, 07:02		#4
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	However you can choose DES or DDES model. Also you can go for Embedded LES (E-LES)

May 28, 2012, 06:36		#6
oborona New Member Helen Join Date: Apr 2012 Posts: 17 Rep Power: 14	I think I was wrong. I have the out-dated information that combustion models need the epsilon-equation but not omega-equation. But as was found I can use SST model with combustion.