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Showing results 1 to 10 of 10 Search took 0.00 seconds. Search: Posts Made By: -mAx-

Forum: OpenFOAM Running, Solving & CFD January 7, 2014, 09:19

Replies: 17 Wall treatment with geometrical restriction Views: 1,831 Posted By -mAx- I am pretty sure I have mixed settings for... I am pretty sure I have mixed settings for epsilon in Low-Re Model with settings for omega in k-omega SST. Thanks for pointing me this out!

Forum: OpenFOAM Running, Solving & CFD March 14, 2013, 01:59

Replies: 17 Wall treatment with geometrical restriction Views: 1,831 Posted By -mAx- Yes, if I have also walls with y+ up to 50, then... Yes, if I have also walls with y+ up to 50, then I would use nutUSpaldingWallFunction with k and omega set as zeroGradient. I set both them to very small value (not zeroGradient), if I am sure that...

Forum: OpenFOAM Running, Solving & CFD March 13, 2013, 08:59

Replies: 17 Wall treatment with geometrical restriction Views: 1,831 Posted By -mAx- Hello Chris, I would rather say, with y+ >>1 ... Hello Chris, I would rather say, with y+ >>1 you may use nutUSpaldingWallFunction, but k and omaga at walls should be zeroGradient. Turbulence gurus may correct me

Forum: OpenFOAM Running, Solving & CFD March 11, 2013, 06:14

Replies: 17 Wall treatment with geometrical restriction Views: 1,831 Posted By -mAx- Hello fumiya, I set k and omega with very low... Hello fumiya, I set k and omega with very low value, since I know that my y+ are below 1. That's why I used nutUSpaldingWallFunction and not omegaWallFunction. And I got good results

Forum: OpenFOAM Running, Solving & CFD February 11, 2013, 04:59

Replies: 17 Wall treatment with geometrical restriction Views: 1,831 Posted By -mAx- Bonjour Gwenael, I don't think the problem may... Bonjour Gwenael, I don't think the problem may come from y+~0.005, since it is << 1. But the problem may occures if you have cells with y+~30. But as far as I read, then you can use...

Forum: OpenFOAM Running, Solving & CFD February 5, 2013, 05:51

Replies: 17 Wall treatment with geometrical restriction Views: 1,831 Posted By -mAx- /constant/RASProperties RASModel ... /constant/RASProperties RASModel kOmegaSST; turbulence on; /0/k inlet { type fixedValue; value uniform 0.006; }

Forum: OpenFOAM Running, Solving & CFD February 4, 2013, 08:29

Replies: 17 Wall treatment with geometrical restriction Views: 1,831 Posted By -mAx- what I understood: this wall treatment switchs... what I understood: this wall treatment switchs automatically between lowRe and standard wall function dependantly on your local y+ In my case, I build my mesh with y+~1

Forum: OpenFOAM Running, Solving & CFD February 4, 2013, 05:45

Replies: 17 Wall treatment with geometrical restriction Views: 1,831 Posted By -mAx- in my case y+ goes from 0.005 till 2.2 (results... in my case y+ goes from 0.005 till 2.2 (results from yPlusRAS) I don't have article about this, but I searched a lot in the forum. For example:...

Forum: OpenFOAM Running, Solving & CFD February 4, 2013, 02:56

Replies: 17 Wall treatment with geometrical restriction Views: 1,831 Posted By -mAx- Problem solved by using k-Omega SST model with... Problem solved by using k-Omega SST model with nutUSpaldingWallFunction on fine grid. Then k and omega were set with uniform value 1e-10 instead of zeroGradient Once model converged yPlusRAS...

Forum: OpenFOAM Running, Solving & CFD January 30, 2013, 06:48

Replies: 17 Wall treatment with geometrical restriction Views: 1,831 Posted By -mAx- [Solved]-Wall treatment with geometrical restriction Hello, I am turrning around since a week for wall treatment. My geometries don't allow me keeping first cell's y+ >30. If I generate BL with first cell's height computed for y+ =30, then I don't...

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