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

Comparative analysis problem

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 23, 2007, 19:13
Default Comparative analysis problem
  #1
Giancarlo Páez
Guest
 
Posts: n/a
I made a duct analysis in CFX 10.0 the convergence is ok, after I made some changes in the duct because some assembly restrictions, I simulate the new duct with the same conditions but the analysis don't converge. I only want to compare the dp (preassure) of the original duct and the new duct.

All the conditions are the same, the change is the geometry This is my first analysis in CFX Please help me,

Thanks in advance.

  Reply With Quote

Old   January 24, 2007, 17:09
Default Re: Comparative analysis problem
  #2
Glenn Horrocks
Guest
 
Posts: n/a
Hi,

The problem could be many things, but one common issue is that previously the simulation was steady state and now the restrictions are causing transient effects by vortex shedding. You might be able to fix it by using a longer physical timescale, but if that does not fix it you will probably need to do a transient simulation.

Glenn Horrocks
  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
area does not match neighbour by ... % -- possible face ordering problem St.Pacholak OpenFOAM 9 November 22, 2011 11:02
Convergence Criterion Problem in RC beam for NON LINEAR analysis chagri ANSYS 0 September 14, 2011 09:24
Gambit - meshing over airfoil wrapping (?) problem JFDC FLUENT 1 July 11, 2011 05:59
Transient 2D analysis residual problem !!! ArslanOZCAN FLUENT 0 January 30, 2011 14:05
Periodic flow boundary condition problem sudha FLUENT 3 April 28, 2004 08:40


All times are GMT -4. The time now is 07:22.