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July 21, 2016, 04:29 |
Scalable Wall Function in OpenFOAM?
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#1 |
New Member
wuyu
Join Date: Mar 2010
Posts: 27
Rep Power: 16 |
I am simulating a turbine blade problem and the y plus value of the first layer (after running quite a while) becomes 9~323. I do not want to coarsen the near wall mesh with the consideration of resolving the near-blade region. So I plan to use kOmegaSST model and scalable wall function?
But I cannot figure out which wall function to be used as scalable wall function.The conventional kqRwallfunction or kLowReWallFunction for k? |
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October 12, 2016, 09:19 |
Scalable wall function
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#2 |
New Member
Timo Kulju
Join Date: Aug 2009
Posts: 22
Rep Power: 17 |
Hello,
Actually there isn't this feature in OpenFOAM. I modified for k-epsilon simulations the epsilonWallFunction BC to account this, by expressing epsilon and G with the aid of limited yPlus. The modified wall function works really good, at least it's stable and gives good convergence. Maybe you could do the same with omega? - Timo |
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