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Recommended schemes for stall on airfoil with kklomega |
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May 30, 2016, 09:10 |
Recommended schemes for stall on airfoil with kklomega
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#1 |
Senior Member
Join Date: Mar 2016
Posts: 133
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Hi Foamers,
i'm doing a steady simulation on an airfoil with Re = 1.5e6 using kklomega and solver simpleFoam. The simulations have given me good results of Cd and Cl until angle of attack 10° using these schemes: ddtSchemes { default steadyState; } gradSchemes { default Gauss linear; } divSchemes { default none; div(phi,U) bounded Gauss linearUpwindV grad(U); ----------> at beginning upwind div(phi,kt) bounded Gauss upwind; div(phi,kl) bounded Gauss upwind; div(phi,omega) bounded Gauss upwind; div((nuEff*dev(T(grad(U))))) Gauss linear; } laplacianSchemes { default Gauss linear corrected; } interpolationSchemes { default linear; } snGradSchemes { default corrected; } fluxRequired { default no; p; } but starting from 13° results are worse and starting from 15°, near where the stall is verified, i have more and more oscillations and i know that is normal but it difficult for me individuate the solution and if my schemes are good or they have to change when stall is coming. |
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