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Question about the Low Reynolds K-Omega turbulent model.

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Old   July 14, 2017, 05:53
Default Question about the Low Reynolds K-Omega turbulent model.
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Anh
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Hi, CFD user

I am making the turbulent code for my problem. I chose the Wilcox k-omega model version 1988. This model has the standard version and low Re model.

I chose the low Re version for my study. For low Re model, there is no need modify the turbulent quantities at first grid point and no wall function is applied. All properties can be solved directly at all grid point. For example the turbulent viscosity is estimated by (fnuy*Rho*k/w) in all grid point. At wall all turbulent quantities is zero, except the Omega value which is defined as Menter comment. That is what I did for my code.

Howerver, I got the strange results of the turbulent kineticenergy and viscosity distribution as you can see in the picture belows.

I do not understand why this happen. Is there the wrong in the code I did as explained before?

Please give me the comment! Thank you.
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File Type: png TurbulentKinetic Energy.png (17.1 KB, 11 views)
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