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

plotting residual field

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 30, 2009, 09:12
Default plotting residual field
  #1
New Member
 
sungho yoon
Join Date: Mar 2009
Posts: 20
Rep Power: 9
syoon is on a distinguished road
I have a difficulty in obtaining a convergence.
Achieved rms is 10^-4 and max is 10^-3, so far.

I would like to identify where max occurs.
Is there any way to visualise rms and max using CFX-post?

Regards,
Sungho
syoon is offline   Reply With Quote

Old   March 30, 2009, 09:18
Default
  #2
Member
 
Join Date: Mar 2009
Posts: 44
Rep Power: 9
Timon is on a distinguished road
Yes, but you need to switch on residual output explicitly. You can do this in pre ("output control tab") or by adding expert parameter "output eq residuals = t" . The residuals will then be present as variables in post.
Timon is offline   Reply With Quote

Old   March 30, 2009, 09:20
Default
  #3
New Member
 
sungho yoon
Join Date: Mar 2009
Posts: 20
Rep Power: 9
syoon is on a distinguished road
Thank you, Timon.
syoon is offline   Reply With Quote

Old   March 30, 2009, 10:06
Default
  #4
Senior Member
 
Rikio
Join Date: Mar 2009
Location: SH, China
Posts: 182
Blog Entries: 1
Rep Power: 9
rikio is on a distinguished road
Send a message via Skype™ to rikio
You can just display the elements of MAX residuals by plotting related volumes. The node numbers are shown in the table of "Locations of Maximum Residuals" at the end of the out file.
rikio is offline   Reply With Quote

Old   March 30, 2009, 10:09
Default
  #5
New Member
 
sungho yoon
Join Date: Mar 2009
Posts: 20
Rep Power: 9
syoon is on a distinguished road
Thank you, rikio.
It's helpful to know the information.
syoon is offline   Reply With Quote

Old   March 30, 2009, 17:54
Default
  #6
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 12,832
Rep Power: 100
ghorrocks is a jewel in the roughghorrocks is a jewel in the roughghorrocks is a jewel in the rough
Hi,

you might also find this useful:

http://www.cfd-online.com/Wiki/Ansys...gence_criteria

Glenn Horrocks
ghorrocks is offline   Reply With Quote

Old   April 1, 2009, 04:13
Default
  #7
New Member
 
sungho yoon
Join Date: Mar 2009
Posts: 20
Rep Power: 9
syoon is on a distinguished road
Thank you, Glenn.
I found it is very helpful.

Sungho
syoon 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
How to write k and epsilon before the abnormal end xiuying OpenFOAM Running, Solving & CFD 8 August 27, 2013 15:33
Computational time sunnysun OpenFOAM Running, Solving & CFD 5 March 16, 2009 04:32
Differences between serial and parallel runs carsten OpenFOAM Bugs 11 September 12, 2008 11:16
Unknown error sivakumar OpenFOAM Pre-Processing 9 September 9, 2008 12:53
Convergence moving mesh lr103476 OpenFOAM Running, Solving & CFD 30 November 19, 2007 15:09


All times are GMT -4. The time now is 21:23.