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

Update on Fluent 12 calculation speed

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 22, 2008, 12:59
Default Update on Fluent 12 calculation speed
  #1
Allan Walsh
Guest
 
Posts: n/a
A week or so ago, I had posted that Fluent 12 beta seemed to be about twice as slow as the same case running in version 6.3

After doing quite a bit more checking, and looking at the feedback here, we saw (as others had posted) that V12 was actually a bit faster (using Windows serial mode) than V6.3 - for simple cases. X, Y, Z momentum, pressure, and K-eps turbulence.

However, for cases with species transport (finite rate-eddy dissipation) V12 was indeed much slower. Looking at only the species calculations, the multigriding residuals and number of loops were the same in V6.3 and 12. The multigrid setting were identical for both versions as were all of the other solution parameters that we checked.

Fluent support is checking into this but no verdict yet. Anyone have some insight on other things to check?
  Reply With Quote

Old   May 22, 2008, 17:05
Default Re: Update on Fluent 12 calculation speed
  #2
red lemon
Guest
 
Posts: n/a
Is is Fluent support in the UK who are looking into this in the Fluent 12 beta version?
  Reply With Quote

Old   May 23, 2008, 12:21
Default Re: Update on Fluent 12 calculation speed
  #3
Allan Walsh
Guest
 
Posts: n/a
No, just whoever answers the inquiries on the Fluent User Support website. I was hoping that it was just one the default model set-up parameters that needed to be changed or something that might be corrected in the beta version.
  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 can I speed up my calculation? Kim FLUENT 2 June 24, 2008 13:31
very slow calculation speed, any sugestions? Duncan Gravill Main CFD Forum 3 March 29, 2007 16:38
Supersonic-Speed-Calculation Gernot FLUENT 1 March 17, 2006 04:48
udf in MRF to update the rotational speed Jam FLUENT 0 August 21, 2005 12:50
Multiphase - Speed of calculation us FLUENT 0 April 29, 2005 10:47


All times are GMT -4. The time now is 05:55.