CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

modeling turbulence

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

LinkBack Thread Tools Display Modes
Old   September 25, 2008, 11:48
Default modeling turbulence
Posts: n/a
I want to study the turbulence inside an isothermal reactor. What is the better model I can use? Until now I have used only k-epsilon model.Is it correct this model for such study or is better another model?
  Reply With Quote

Old   September 26, 2008, 10:59
Default Re: modeling turbulence
John S
Posts: n/a
Each model has its own advantages and disadvantages so the choice of model is up to the user based on what flow characteristics you want to capture. K-epsilon models are good for modeling the freestream but tend to lose their accuracy in the near wall simulation, whereas k-omega models are the opposite. The SST formulation of the k-w model tries to blend k-w near the wall and k-e near the freestream. It has the disadvantage of over-predicting the onset and reattachment of flow separation, though. There's a great deal of literature available from Fluent on the theory behind the difference turbulence models.
  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
Turbulence Modeling RAJURAMAIAH Main CFD Forum 11 October 17, 2017 08:27
Turbulence Modeling in CD-ROM? huygen julyend FLUENT 0 December 1, 2008 08:11
Need help in turbulence modeling Andrew FLUENT 3 May 5, 2007 19:39
Turbulence Modeling Sue Main CFD Forum 8 October 27, 2005 03:44
CFX for turbulence modeling Sujit CFX 1 August 13, 2003 06:20

All times are GMT -4. The time now is 18:14.