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Boundary condition for k-omega SST model with high/low Re |
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#1 |
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Jiadong Wang
Join Date: Mar 2018
Location: Australia
Posts: 32
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Hello everyone,
I’m working on the flapping foil with the k-omega SST model. After looked at a number of posts about the boundary condition of k-omega SST model, I’m still confused with that. Currently, I employ the following BC’s. (1) High Reynolds number with y+ = 30 ~ 100: Code:
‘k’ airfoil { type kqRWallFunction; value $internalField; } ‘omega’ airfoil { type omegaWallFunction; value $internalField; } ‘nut’ airfoil { type nutkWallFunction; value uniform 0; } (2) Low Reynolds number with y+ = around 1: Code:
‘k’ airfoil { type fixedValue; value uniform 1e-12; } ‘omega’ airfoil { type omegaWallFunction; value $internalField; } ‘nut’ airfoil { type calculated; value uniform 0; } |
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#2 |
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Jiadong Wang
Join Date: Mar 2018
Location: Australia
Posts: 32
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By the way, I'm using OpenFoam v4.1
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#3 |
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#4 | |
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Jiadong Wang
Join Date: Mar 2018
Location: Australia
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Quote:
I'll check this thread. |
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#5 | |
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Jiadong Wang
Join Date: Mar 2018
Location: Australia
Posts: 32
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Quote:
I checked the thread you recommended, and it’s truly helpful. Now, I basically understand the relation between y+ and whether use a wallFunction. My last question is about the setup in OpenFoam. So is that right for my initial attached setup of k-omega SST model? |
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#6 | |
New Member
Ben Gherardi
Join Date: Jun 2016
Posts: 17
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Quote:
I was wondering about the setup as well and found this topic: BC's for k-omega SST (low / hi Re setups) Your post is quite old, so I truly hope you found an answer by then, but for others ending up here like I did it could help.
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Enjoy the flow |
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Tags |
boundaries condition, k-omega sst model, reynolds number |
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