CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Main CFD Forum

Navier Stokes tvd

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 26, 2007, 18:30
Default Navier Stokes tvd
  #1
shuo
Guest
 
Posts: n/a
I want to solve the Navier-Stokes equations using upwind and symmetric TVD schemes(Yee, Klopper.. 1990). The flux F have to be modified using the R whose columns are eigenvectors of dF/dU.

F_mod = 1/2*(F_i + F_i+1 + R*phi)

I have R for the inviscid F but not the viscous version. What I did instead was to only modify the inviscid fluxes and leave the viscous fluxes as is. The stresses themselves were calculated using central differencing.

I compared simulation of an supersonic impinging jet using EUler and N-S. The flow contours using the latter had 'strips' emanating from the jet where as the Eulers eq produced a smoother flowfield. Also the simulation using N-S blows up just before impingement. Any suggestions?

Cheers Shuo
  Reply With Quote

Reply

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
Filtered navier stokes equation..LES:: Palani Velladurai Main CFD Forum 7 September 6, 2013 02:51
Adding a term to Navier Stokes Equation ashtonJ CFX 3 January 15, 2011 07:32
Navier stokes compresible viscid flow fea, somebody can help? Jose Choy Main CFD Forum 3 October 24, 2003 02:28
Newbie:Viscoelasticity and Navier stokes equation Rajil Saraswat Main CFD Forum 2 June 9, 2003 07:21
help: I am trying to solve Navier Stokes compressible and viscid flow Jose Choy Main CFD Forum 2 May 18, 2000 05:45


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