Lift

Pacificdubey · November 20, 2019, 21:34

I'm getting different lift coefficients with different models.
I've checked many times, my conditions are the same in both models.
Can anyone please tell, what could be the reason for this?
K Epsilon - 0.12
K Omega SST - 0.06

Bazinga · November 21, 2019, 05:03

Your question is quite arbitrary and I suggest to provide more details for your case if you like more detailed answers.

Anyways, it is expected that different turbulence models give different results.

Time4Tea · November 25, 2019, 11:11

Another important factor is what wall model you are using for the k-epsilon model. My experience is that this can give quite different results, because different wall models are suitable for different mesh densities and flow conditions.

Also, I assume you are using inflation layers on the walls?

November 20, 2019, 21:34	Lift	#1
Pacificdubey New Member Prashant Join Date: Sep 2019 Posts: 6 Rep Power: 6	I'm getting different lift coefficients with different models. I've checked many times, my conditions are the same in both models. Can anyone please tell, what could be the reason for this? K Epsilon - 0.12 K Omega SST - 0.06 Last edited by Pacificdubey; November 21, 2019 at 05:24.

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November 21, 2019, 05:03		#2
Bazinga Senior Member Join Date: Jun 2012 Location: Germany, Bochum Posts: 230 Rep Power: 15	Your question is quite arbitrary and I suggest to provide more details for your case if you like more detailed answers. Anyways, it is expected that different turbulence models give different results.

November 25, 2019, 11:11		#3
Time4Tea Senior Member Lee Strobel Join Date: Jun 2016 Posts: 133 Rep Power: 9	Another important factor is what wall model you are using for the k-epsilon model. My experience is that this can give quite different results, because different wall models are suitable for different mesh densities and flow conditions. Also, I assume you are using inflation layers on the walls?