CFD Online Logo CFD Online URL
Home > Forums > CFX


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

LinkBack Thread Tools Display Modes
Old   July 22, 2002, 08:23
Default Convergence
Posts: n/a
hey guys

I am modeling a ventilated space. when I increase the number of cells the mass residual decreases only in an order of one. Is it possible to reduce it further? For a course grid I get a reduction of order 12, when I triple the grid size there is a problem.


  Reply With Quote

Old   July 23, 2002, 13:25
Default Re: Convergence
James Date
Posts: n/a
Just a little tip. Check that the Y+ of any cells near any solid walls is greater than 11, usually cell sizes should be such that the Y+ is in the range of 30 - 500. I have found in my research that failure to stick to the correct bounds for Y+ can result in lack of convergence and very long solution times.

Good luck

  Reply With Quote

Old   July 29, 2002, 05:32
Default Re: Convergence
Posts: n/a
  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
Convergence Centurion2011 FLUENT 26 November 24, 2015 15:46
problem with Min/max rho tH3f0rC3 OpenFOAM 7 February 23, 2013 06:37
Force can not converge colopolo CFX 13 October 4, 2011 22:03
Convergence of CFX field in FSI analysis nasdak CFX 2 June 29, 2009 01:17
Defect correction and convergence ganesh Main CFD Forum 4 June 30, 2006 14:20

All times are GMT -4. The time now is 08:32.