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-   -   Question about shifting turbulence model from K-Omega to SSG Reynolds stress (http://www.cfd-online.com/Forums/main/108879-question-about-shifting-turbulence-model-k-omega-ssg-reynolds-stress.html)

Anna Tian November 3, 2012 15:03

Question about shifting turbulence model from K-Omega to SSG Reynolds stress
 
Hi

I'm shifting the turbulence modeling of my simulation from K-Omega to SSG Reynolds stress. The grid independence study result works well for my K-Omega simulation.

May I ask do I need to do the grid independence study again? (Only because I change my turbulence model)

Thank you very much.

Anna Tian January 20, 2013 12:30

Quote:

Originally Posted by Anna Tian (Post 390077)
Hi

I'm shifting the turbulence modeling of my simulation from K-Omega to SSG Reynolds stress. The grid independence study result works well for my K-Omega simulation.

May I ask do I need to do the grid independence study again? (Only because I change my turbulence model)

Thank you very much.


Could someone answer me this question? Thanks!

cdegroot January 20, 2013 13:36

I would check grid independence again. When you check grid independence you are trying to determine if the solution that you obtained for your governing equations is sufficiently resolved by the grid that you used. Since the turbulence equations that you are solving are different, it can't be guaranteed that the same grid will do as good of a job resolving the solution. That being said, it is fairly likely that the same grid is fine since the solution of the turbulence equations influence the flow solution indirectly. However, it is good practice to always check.


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