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

How to improve the accuracy of the CFX?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 7, 2003, 09:45
Default How to improve the accuracy of the CFX?
  #1
Miko
Guest
 
Posts: n/a
Hi all! If I want to improve the accuracy of the result of calculation in CFX, what should I do? I know in the Mesh Parameters, timestep, Converge Control, Converge criteria, etc., we can improve the accuracy by properly setting. Is it right?

Miko
  Reply With Quote

Old   June 7, 2003, 11:53
Default Re: How to improve the accuracy of the CFX?
  #2
zahid
Guest
 
Posts: n/a
Hi Miko Mesh parameters i.e. mesh refinement affects the accuracy of CFD calcualtions. But timestep size and convergence control parameters do not affect the accuracy of the CFD calcualtions. They are used to obtain a converged solution. If you do not set proper convergence control parameters then you will not be able to obtain a properly coverged solution. As far as I think discritization scheme is the most important thing that affects the accuracy of CFX solution.
  Reply With Quote

Old   June 8, 2003, 17:38
Default Re: How to improve the accuracy of the CFX?
  #3
Pascale Fonteijn
Guest
 
Posts: n/a
- Use at least high resolution or a blend of 1 for the advection scheme.

- you could use adaptive meshing.

Pascale
  Reply With Quote

Old   June 10, 2003, 04:47
Default Re: How to improve the accuracy of the CFX?
  #4
cfd guy
Guest
 
Posts: n/a
Yes, but I think that Miko should start checking the boundary conditions. If it's not properly set up you will get accuracy whithin the code, but wrong physical results.


Regards, cfd guy
  Reply With Quote

Old   June 12, 2003, 21:24
Default Re: How to improve the accuracy of the CFX?
  #5
Miko
Guest
 
Posts: n/a
Thank you all, zahid, Pascale Fonteijn and cfd guy! Your suggestions are very useful!

Best regards!

Miko
  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
Different flow pattern between OpenFOAM and CFX AirS OpenFOAM 0 January 12, 2010 08:08
heat generation in CFX Ema CFX 4 August 7, 2009 05:39
Electronics Enclosure Analysis with CFX Simulation Engineer CFX 1 April 22, 2009 11:08
CFX 10 in CFX 5.7 panneerselvam.R CFX 6 February 6, 2006 04:56
CFX 4.4 installation problem Pandu Sattvika CFX 1 December 1, 2001 05:07


All times are GMT -4. The time now is 15:13.