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

CFX solver Convegence Problem

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 2, 2012, 06:39
Default CFX solver Convegence Problem
  #1
Member
 
yang
Join Date: Jun 2012
Posts: 39
Rep Power: 5
wangy1767 is on a distinguished road
Dear all,

I set the Residual Target of RMS is 1.0e-4. However, after the certain iterations, it is found only RMS P-Mass gets to 1.0e-5, others e.g. RMS U/V/W etc. only get to 1.0e-3. Could we think this simulation is converging? If not, how can we think it converges for the RMS? And how to make it converge? Since I tried to make the CFD simulation to meet the actual situations many times. But it still cannot meet 1.0e-4 for all the final iterations.

Please give me some advices and solutions for that.

Many thanks in advance!
wangy1767 is offline   Reply With Quote

Old   July 2, 2012, 07:51
Default
  #2
Member
 
Luis Filipe Fabiani
Join Date: Apr 2009
Posts: 43
Rep Power: 8
lffabiani is on a distinguished road
Yang,

Take a look at the FAQ: http://www.cfd-online.com/Wiki/Ansys...gence_criteria

The first item is just about this topic.

And to answer your question, it appears that your solution has not converged.

Best regards
lffabiani 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
CFX solver problem Lamine CFX 4 June 14, 2013 17:43
Problem Importing Geometry ProE to CFX fatb0y CFX 3 January 14, 2012 20:42
Working directory via command line Luiz CFX 4 March 6, 2011 21:02
ERROR #002100056 CFX FSI problem Hongdao CFX 0 November 10, 2010 04:58
CFX new user, problem with solver and PRE settings Vijesh Joshi CFX 1 March 13, 2006 23:42


All times are GMT -4. The time now is 23:06.