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

epsilon divergence

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 7, 2006, 12:42
Default epsilon divergence
  #1
Spyros
Guest
 
Posts: n/a
I am trying to simulate the airflow in a furnished room with ventilation using the standard k-esp. The problem I encounter is that after some iterations epsilon diverges. I have tried modifying the urfs, applying non-iter-time advancement, even using only first order discretization just to tackle that...but nothing. Can anyone help me?

Thanks a lot, Spyros
  Reply With Quote

Old   December 11, 2006, 02:35
Default Re: epsilon divergence
  #2
Peggy
Guest
 
Posts: n/a
Try to adjust the Relaxation Factor.
  Reply With Quote

Old   December 11, 2006, 12:04
Default Re: epsilon divergence
  #3
Spyros
Guest
 
Posts: n/a
Thanks Peggy for replying, it seems that the problem was in the initial conditions for kappa and epsilon in the inlets. I have also switched to RNG (it does not overestimate kappa).

Take care, Spyros
  Reply With Quote

Reply

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
SimpleFoam k and epsilon bounded nedved OpenFOAM Running, Solving & CFD 16 March 4, 2017 09:30
Quarter Burner mesh with periosic condition SamCanuck FLUENT 2 August 31, 2011 12:34
Orifice Plate with a fully developed flow - Problems with convergence jonmec OpenFOAM Running, Solving & CFD 3 July 28, 2011 06:24
How to get reference to k and epsilon in the epsEqn and kEqn cfd_explorer OpenFOAM Programming & Development 0 March 10, 2011 11:16
SimpleFoam k and epsilon bounded nedved OpenFOAM Running, Solving & CFD 1 November 25, 2008 21:21


All times are GMT -4. The time now is 05:29.