CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Time step variation with relaxation

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 24, 2009, 18:52
Default Hi, I've been trying to adapt
  #1
New Member
 
Sean McIntyre
Join Date: Mar 2009
Location: State College, PA
Posts: 11
Rep Power: 17
sean_mcintyre is on a distinguished road
Hi,
I've been trying to adapt rasInterFoam into a steady solver, using relaxation factors, and calling U.relax(), pd,relax(), etc. I've noticed that even in damBreak, if I set the relaxation factors to any value other than 1, for a given CFL, the time step size observed decreases by orders of magnitude. Is there something within the code (perhaps within runTime or another global-type variable) that scales the time step when relaxation is detected?

Thanks,
Sean
sean_mcintyre is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Time step size and max iterations per time step pUl| FLUENT 33 October 23, 2020 23:50
SELECTING TIME STEP SIZE, NUMBER OF TIME STEP NITUL KALITA FLUENT 2 November 22, 2012 09:28
time step variation vijay FLUENT 0 February 1, 2006 22:53
variation of gravity with time rajani FLUENT 0 February 16, 2005 03:45
Grid changes whith time variation H.P.LIU Phoenics 3 September 1, 2001 08:53


All times are GMT -4. The time now is 10:05.