|April 1, 2010, 08:35||
Join Date: Mar 2010
Posts: 3Rep Power: 8
Dear OpenFoam 1.6 users and experts,
I'm trying to use the LES turbulence model "kOmegaSSTSAS". I noticed some differences between the implemented version and the reference**. The main difference is the SAS source term in the omega equation: in the reference there is a (L/Lvk2)^2 (squared) instead of a simple L/Lvk2 (the coefficients of this term are also different). I'm doing a master thesis in CFD using this model, so I'm aware of how the model works. In the study of this model I discovered that the first version by Menter has a simple L/Lvk2 and later this term has been squared. Underlining that the other coefficients of the implemented model are the same of the reference (except those of the SAS source term), I have two questions:
1) Is the difference I noticed a bug?
2) Is the implemented kOmegaSSTSAS an old version of the model and so it needs to be updated?
Any help would be greatly appreciated!
DESider A European Effort on Hybrid RANS-LES Modelling:
Results of the European-Union Funded Project, 2004 - 2007
(Notes on Numerical Fluid Mechanics and Multidisciplinary Design).
Chapter 8 Formulation of the Scale-Adaptive Simulation (SAS) Model during
the DESIDER Project.
F. R. Menter and Y. Egorov.
|April 1, 2010, 10:42||
There are two version of SST based SAS model
2007 version :
Egorov, Y.,and Menter, F. ,
“Development and Application of SST-SAS Turbulence Model in the DESIDER Project”,
Second Symposium on Hybrid RANS-LES Methods, Corfu, Greece, 2007
2005 version :
Menter, F.R. and Egorov, Y.,
"A Scale-Adaptive Simulation Model using Two-Equation Models",
AIAA paper 2005-1095, Reno/NV, 2005.
here maybe the old version. and Fsas=1.25,this parameter is not in 2007 one .
you may modified this to new the one.
|Thread||Thread Starter||Forum||Replies||Last Post|
|LES kOmegaSSTSAS / looking for RASProperties||podallaire||OpenFOAM Bugs||23||December 17, 2014 06:17|
|kOmegaSSTSAS||Andrea Giusti||OpenFOAM||0||March 30, 2010 10:14|
|kOmegaSSTSAS model||Kr_kim||OpenFOAM Running, Solving & CFD||5||February 4, 2010 14:46|