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

Continuity not converging

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 18, 2005, 13:02
Default Continuity not converging
  #1
CFD-student
Guest
 
Posts: n/a
I'm running a transient simulation of hydrogen dispersion behind a cubical building. I'm using PISO with 30 corrector stages (implicit scheme) with a time step of 0.1sec. The log file shows me that every few time steps the continuity equation does not converge which takes the iterations up to the 30 corrector stages; therefore increasing my solution time.

Does anybody have any advise on how to get it to converge such that I can save some time?

All comments are greatly appreciated:

Specs: STAR-CD

•Inlet at west 7/ms k=0.01m2/s2 e=0.0002m2/s3 and a tempertaure profile (on Z) of -1°/100m

•Outlet at east split = 1

•Ground soft surface E=9

•Rest; symetry boundaries

•Domain 750m L 350m W 250m H

•cube (60m) center at x = 380m

Hector A. Olvera
  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 to write k and epsilon before the abnormal end xiuying OpenFOAM Running, Solving & CFD 8 August 27, 2013 15:33
Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3 bookie56 OpenFOAM Installation 8 August 13, 2011 04:03
Convergence moving mesh lr103476 OpenFOAM Running, Solving & CFD 30 November 19, 2007 15:09
IcoFoam parallel woes msrinath80 OpenFOAM Running, Solving & CFD 9 July 22, 2007 02:58
Could anybody help me see this error and give help liugx212 OpenFOAM Running, Solving & CFD 3 January 4, 2006 19:07


All times are GMT -4. The time now is 22:57.