# RSM for 2D axisymmetric flows

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 LinkBack Thread Tools Display Modes
 January 12, 2006, 09:02 RSM for 2D axisymmetric flows #1 Murthy Ravikanti Guest   Posts: n/a Hi, I am implementing Reynolds Stress model for 2D axi-symmetric flows without swirl. Hence I am solving only for UU,VV and UV stresses. I am facing difficulties in getting a physically realistic solution. When I refer to FLUENT's way of solving 2D axisymmetric flows without swirl, I find that it solves WW stress as well!!! ..How is it possible to have finite WW stress when there is no W velocity component in the first place? Thanks, -Murthy

 January 18, 2006, 06:12 Re: RSM for 2D axisymmetric flows #2 kharicha Guest   Posts: n/a You forget an important idea: Turbulence is a 3D phenomena. RSM is a RANS model, which divides the flow into mean flow (U, V, W) and turbulent fluctuations (U*, V*, W*). You can simulate a 2D axi-symmetric flow with U, V and a mean W equal to 0. BUT THIS DOESN'T MEAN THAT THERE ARE NO FLUCTUATIONS IN THE THETA DIRECTION (WW stress). SO what you got is realistic.

 January 18, 2006, 07:32 Re: RSM for 2D axisymmetric flows #3 Murthy Ravikanti Guest   Posts: n/a Hi Kharicha, Thanks for providing that insight. It really helps! -Murthy

 January 25, 2006, 12:45 Re: RSM for 2D axisymmetric flows #4 Thomas Guest   Posts: n/a Because turbulence is a 3d phenomen. thomas

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Timon CFX 3 November 6, 2008 05:48 jinwon park Main CFD Forum 0 February 26, 2008 17:26 Erika FLUENT 0 March 31, 2006 10:56 mystic_cfd FLUENT 0 January 14, 2004 09:17 J. Kim FLUENT 1 March 28, 2003 04:00

All times are GMT -4. The time now is 00:50.

 Contact Us - CFD Online - Privacy Statement - Top