CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Fluent 12 k-w SST turbulence model

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

LinkBack Thread Tools Display Modes
Old   December 13, 2009, 09:33
Default Fluent 12 k-w SST turbulence model
Join Date: Sep 2009
Posts: 69
Rep Power: 8
DarrenC is on a distinguished road
Hi everyone,

I am using the k-w SST turbulence model to predict unsteady flow of a NACA0012 airfoil pitching at a fixed rate. I am trying to understand how this turbulence model toggles between resolving the viscous sublayer and using a wall function. Ive done a bit of searching around here and it seems that there should be a radio button that toggles transitional flow on/off but I do not see it at all in this version of Fluent 12. There is one radio button in the viscous model box that says low-Re correction, which according to the manual says should be on when resolving the sublayer, but dosent give a definite explaination as to how the model toggles between the two modes. Does anybody have any idea.

And also, how does the accuracy of your solution compare when using a wall function vs resolving all the way to the viscous sublayer?

Thank you for your help in advance.
DarrenC 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
KOmega Turbulence model from wwwopenFOAMWikinet philippose OpenFOAM Running, Solving & CFD 30 August 4, 2010 10:26
Reynolds Stress model in CFX vs Fluent Tim CFX 1 October 7, 2009 06:19
two turbulence model in fluent duaiduaihu FLUENT 1 August 26, 2009 19:39
Seeking Macroscopic Particle Model in Fluent bzhang7 FLUENT 0 May 27, 2009 13:36
Fan heater model: what turbulence source to use? andy20 Main CFD Forum 0 March 2, 2008 13:46

All times are GMT -4. The time now is 22:27.