CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   OpenFOAM Running, Solving & CFD (https://www.cfd-online.com/Forums/openfoam-solving/)
-   -   LES wall-function Hi-Re (https://www.cfd-online.com/Forums/openfoam-solving/131818-les-wall-function-hi-re.html)

Pj. March 21, 2014 07:21
LES wall-function Hi-Re
 
Hi everybody

Before opening this thread i did some research, but I couldn't find an answer to this pretty-basic question.

I have an Hi-Re LES case. I would like to setup some wall-functions for my variables, especially for U but i couldn't figure how to do it.

I read that setting the BC for U to fixedValue 0 0 0, OpenFoam uses a Low-Re wall function. How can i set a Hi-Re one?
Moreover here it tells
Quote:
The choice of wall function model is specified through: [...] νsgs in the 0/nuSgs file for incompressible LES
but doing find $FOAM_SRC/turbulenceModels -name wallFunctions the output is:
Quote:
/software/OpenFOAM/OpenFOAM-2.2.x/src/turbulenceModels/incompressible/RAS/backwardsCompatibility/wallFunctions
/software/OpenFOAM/OpenFOAM-2.2.x/src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/wallFunctions
/software/OpenFOAM/OpenFOAM-2.2.x/src/turbulenceModels/compressible/RAS/backwardsCompatibility/wallFunctions
/software/OpenFOAM/OpenFOAM-2.2.x/src/turbulenceModels/compressible/RAS/derivedFvPatchFields/wallFunctions
It seems there're no LES wall-functions.

I'm sorry if the question is stupid, but i'm a bit confused about this topic.
Thank for the help,
Luca

Pj. March 24, 2014 06:17
No one can help me on this topic?


All times are GMT -4. The time now is 12:49.