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

second order upwind cause divege !!

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 4, 2009, 15:00
Default second order upwind cause divege !!
  #1
New Member
 
khsiavash
Join Date: Apr 2009
Posts: 3
Rep Power: 8
khsiavash is on a distinguished road
Dear friends
I`ve developed a non linear eddy viscosity model with UDF.when I use the first order upwind for all transport equations it is OK! solution converged.
But when I switch on second order upwind solution is going to diverging.up to an error "turbulent viscosity limited to....." and finally floating point.

how can I solve this diverging ?
khsiavash is offline   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
2nd order upwind and QUICK scheme Wiroon Main CFD Forum 15 July 23, 2010 10:48
Second Order Upwind: Residuals enricokr FLUENT 26 March 29, 2009 18:22
First order upwind leung FLUENT 2 June 13, 2004 08:09
First Order Upwind Giovanni Ieria FLUENT 3 November 30, 1999 19:43
second order FD upwind scheme Heinz Wilkening Main CFD Forum 2 November 3, 1998 15:33


All times are GMT -4. The time now is 19:22.