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

Why do residuals increase

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 2, 2007, 23:05
Default Why do residuals increase
  #1
jrg
Guest
 
Posts: n/a
For most problems, whenever the solver settings are changed, the residuals would shoot up but rapidly decrease before stabilizing at convergence. What does it mean if the rapid decrease is followed by a very very slow increase with respect to the number of iterations?
  Reply With Quote

Old   October 3, 2007, 18:59
Default Re: Why do residuals increase
  #2
red lemon
Guest
 
Posts: n/a
divergence
  Reply With Quote

Old   October 3, 2007, 19:35
Default Re: Why do residuals increase
  #3
jrg
Guest
 
Posts: n/a
shouldn't divergence be rapid wrt iterations?
  Reply With Quote

Old   October 4, 2007, 18:43
Default Re: Why do residuals increase
  #4
red lemon
Guest
 
Posts: n/a
no can be gradual esp if low urf's
  Reply With Quote

Reply


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 03:55
what to monitor besides residuals? franzdrs FLUENT 5 March 21, 2013 04:59
How can I increase Heat Transfer at Domain Interf? B.Simon CFX 3 October 28, 2008 19:53
Convergence - scaled vs unscaled residuals HS FLUENT 1 November 7, 2005 06:45
residuals Karl CFX 2 June 25, 2003 00:13


All times are GMT -4. The time now is 11:22.