CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > CFX

Problems with residuals

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

LinkBack Thread Tools Search this Thread Display Modes
Old   December 29, 2006, 13:34
Default Problems with residuals
Posts: n/a
Hello again,

at first I want to thank you for replying my posts. It's a real luck that there are platforms like this where helpful people support beginners like me with software proplems. So here is my question: For my steadystate simulation of an agitator vessel I cannot find a good timescale mode to minimize the residuals. I think that y know the reason for this unsatisfactory residuals: as a result of the turbulence eddies the cfx solver cannot find a steady state operating point in the agitator area. So I think it is necessary to know the frequency of this eddy formation. Is there a possibillity to calculate this frequency with cfx?

Thank you very much for replying Martin
  Reply With Quote

Old   January 2, 2007, 11:15
Default Re: Problems with residuals
Posts: n/a
Estimate it analytically using the tangential velocity of the blades and a guestimated strouhal number.

Analytical fluid dynamics + CFD = Win

CFD on its own = Colourfull fluid dynamics
  Reply With Quote

Old   January 2, 2007, 22:10
Default Re: Problems with residuals
Posts: n/a
Joe , good job Indeed, the basics of CFD is fluid dynamics.

  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
[ICEM] Problems with coedge curves and surfaces tommymoose ANSYS Meshing & Geometry 6 December 1, 2020 11:12
Problems with residuals oscillations spacecraft STAR-CCM+ 2 September 13, 2010 08:57
problems with residuals in fluent. Tan FLUENT 3 February 10, 2009 10:05
Convergence - scaled vs unscaled residuals HS FLUENT 1 November 7, 2005 05:45
Problems with residuals?? Peter Kolb FLUENT 0 November 29, 2000 03:48

All times are GMT -4. The time now is 02:41.