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May 15, 2020, 09:35 |
odd results of kOmega SST and small yPlus
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New Member
AmiN
Join Date: Nov 2014
Posts: 13
Rep Power: 11 |
Hi Cfd-Online!
I'm a newbie in OpenFOAM world and happen to submit weekly projects since last month! I' trying to simulate a very simple problem and geometry with kOmegaSST model in "simpleFoam" but the results are odd to me! The geometry as you can see in attachment is a semi-orifice form and the fluid is water at 25ºC and gotta simulate it for Re=30 and Re=3000! I dont use a fine mesh [Overall number of cells of each type : hexahedra: 40000] . With SST model i'm getting very small yPlus number for Re=3000 and Re=30 for example here are the results for Re=3000: Quote:
Both cases dont converge after 10000 interval which might be okay for Re=3000 but odd for Re=30, although after 8000 you dont see that much change in numbers. what do you thing about y+ and also k,Omega, nut behavior ? here are the conditions: U: Quote:
P: Quote:
Omega: Quote:
Quote:
nut: Quote:
fvSolution: Quote:
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