CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Bugs


Register Blogs Members List Search Today's Posts Mark Forums Read

Like Tree1Likes
  • 1 Post By waynezw0618

LinkBack Thread Tools Display Modes
Old   April 1, 2010, 08:35
Default kOmegaSSTSAS
New Member
Andrea Giusti
Join Date: Mar 2010
Posts: 3
Rep Power: 9
Andrea Giusti is on a distinguished road
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.
Andrea Giusti is offline   Reply With Quote

Old   April 1, 2010, 10:42
Senior Member
Join Date: Mar 2009
Location: Shanghai, Shanghai, P.R.China
Posts: 308
Rep Power: 11
waynezw0618 is on a distinguished road
Send a message via MSN to waynezw0618 Send a message via Skype™ to waynezw0618
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.
wish helps!

mm.abdollahzadeh likes this.
waynezw0618 is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
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

All times are GMT -4. The time now is 13:48.