CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

residuals

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 11, 2000, 06:29
Default residuals
  #1
Peter
Guest
 
Posts: n/a
hello, I have some simulations where the first values for the velocityresiduals begin always very slow in the range of 1e-3 to 1e-4. After they decrease about two decades. What influence has this behaviour on my convergence criterium.

Thank you for your help
  Reply With Quote

Old   September 12, 2000, 09:32
Default Re: residuals
  #2
Jack Keays
Guest
 
Posts: n/a
Hi,

I may be wrong, but I think that low residuals from the outset of a simulation means that your initial guess' are quiet close to the correct solution. As for the level to which they converge, I would say hat you should look at the results, and then lower the residual tolerance by maye 2 more decades and run the problem and see if there is a change in your results.

Regards, Jack.
  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
[Tutorials] Tutorial of how to plot residuals ! wolle1982 OpenFOAM Community Contributions 171 February 20, 2024 02:55
what to monitor besides residuals? franzdrs FLUENT 5 March 21, 2013 03:59
Mesh size and solver residuals... Scott CFX 5 December 15, 2008 17:10
Convergence - scaled vs unscaled residuals HS FLUENT 1 November 7, 2005 05:45
residuals Karl CFX 2 June 24, 2003 23:13


All times are GMT -4. The time now is 07:25.