CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Differences between RNG and RS

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

LinkBack Thread Tools Display Modes
Old   September 3, 2003, 09:19
Default Differences between RNG and RS
Posts: n/a

I am running an analyses which has swirling flow from a pipe entering a converging cone. When I use the K epsilon RNG model I get a Rankine vortex within the cone however when i use the Raynolds stress model I get a forced vortex. I am struggling to understand why these differences occur. I was hoping that somone may be able to shed some light into why the differences in the models may occur. I cannot get any physical data in order to verify the cfd models. Can anyone reccomend a good text of source of information which may help me decide which vortex is the most likely result
  Reply With Quote

Old   September 5, 2003, 06:36
Default Re: Differences between RNG and RS
Posts: n/a
Hi, I'm not expert in the subject, but I think you could have a look at the paper:

Vortex breakdown: a review Progress in Energy and Combustion Science Volume: 27, Issue: 4, 2001, pp. 431-481 Lucca-Negro, O.; O'Doherty, T.

Moreover, you could have a look at some fundamental books on turbulence and turbulence modeling, such as:

Turbulent flows, by S. Pope

Turbulence modeling for CFD, by David C. Wilcox


  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

All times are GMT -4. The time now is 14:48.