Automatic wall functions for kEpsilon model
Hi,
I would like to be able to properly calculate the turbulent flows using the standard kEpsilon model regardless of y+ value. In the OpenFOAM implementations, I understand that I have to use the mesh such that y+>30 when using the high Re turbulence model. What approach should I take to my aim? Is there anybody who has experienced the implementations of the automatic wall function in OpenFOAM? I would like to listen to voice of experience. I would welcome any comments and suggestions. Thanks in advance, Fumiya |
Hi Fumiya,
It is my understanding that using nutUSpaldingWallFunction (for nut) will give you such a wall function. For k and epsilon you should keep the usual wall functions (i.e. kqRWallFunction and epsilonWallFunction, respectively). regards, Sylvester |
Thank you very much for your reply, sylvester. I'll have a try.
By the way, I found the article related to this thread: http://www.opensourcecfd.com/confere...9_Kurenkov.pdf Is there anyone who has used or implemented the wall functions described in it? Are they more robust than the wall functions implemented in OpenFOAM? Best regards, Fumiya |
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