CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Divergence in AMG solver

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

LinkBack Thread Tools Display Modes
Old   June 12, 2007, 13:09
Default Divergence in AMG solver
Posts: n/a

I am trying to run a pipe flow case with finer grid,after few iterations, it gives divergence in AMG solver.In residual plot, I see that the continuity curve is diverging. The same case is running fine with coarse mesh size.

your help in this regard is appreciated.

Thanks Sri.
  Reply With Quote

Old   June 12, 2007, 13:19
Default Re: Divergence in AMG solver
Posts: n/a
Hi i think u have a non -positive mesh volum,any where u have aproblem about your nesh. Best
  Reply With Quote

Old   June 12, 2007, 19:41
Default Re: Divergence in AMG solver
Tomasz Bednarz
Posts: n/a
Please also check the grid size ratio... Try to avoid long cells (the best possible are square like cells)
  Reply With Quote


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
Error: Divergence detected in AMG solver siri FLUENT 5 November 21, 2016 07:50
Error: Divergence detected in AMG solver: species-0 -> Increasing relaxation sweeps ksiegs2 FLUENT 2 June 18, 2012 11:26
Divergence detected in AMG & FMG solver..... devesh.baghel FLUENT 1 January 17, 2011 02:58
Divergence detected AMG solver error Rub Nawaz Khalid FLUENT 2 August 14, 2010 11:01
divergence in AMG solver Aly FLUENT 1 November 11, 2004 14:00

All times are GMT -4. The time now is 09:04.