|August 8, 2012, 16:23||
kOmegaSST omega residuals strange behaviour
Join Date: Feb 2012
Posts: 13Rep Power: 4
Hi, i'd like to know if some of you fellow foamers could explain why my omega residuals are very very small and not resolving?
The case is steady state external aerodynamics and i used motorcycle simpleFoam tutorial as base, except motorcycle is frisbee and there is no lower wall
Mesh is ~8M cells hexa and wall functions are in use.
I used k=0.35 and omega=2 as a initial condition, inlet is fixedValue and outlet is inletOutlet and sides are slip and my air speed is 20 m/s. Numerics are cellLimited leastSquares 1 for grad, linearUpwindV for div(U) and upwind for k and omega. Pressure solver is PCG and otherwise PBiCG, tol 1e-08 and reltol 0.01. Under-relaxation is p 0.3, U 0.5, k and omega 0.3.
Solution is not converged in attached picture but i'm more worried about the omega residual behaviour.
|Thread||Thread Starter||Forum||Replies||Last Post|
|strange pressure behaviour with symmetricPlane boudary condition - interFoam||duongquaphim||OpenFOAM Running, Solving & CFD||10||August 20, 2013 14:00|
|Strange Nut behaviour with K-OmegaSST||nicolarre||OpenFOAM||8||April 3, 2013 08:48|
|Strange behaviour when using LienCubicKE and NonlinearKEShih||hani||OpenFOAM Running, Solving & CFD||20||March 6, 2013 10:06|
|Wrong calculation of nut in the kOmegaSST turbulence model||FelixL||OpenFOAM Bugs||27||March 27, 2012 09:02|
|Strange Residuals in CCM+||PeterGG||CD-adapco||3||July 27, 2007 12:52|