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

Chemistry ODE Solver in reactingFoam

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

Like Tree1Likes
  • 1 Post By mturcios777

Reply
 
LinkBack Thread Tools Display Modes
Old   July 13, 2011, 10:31
Default Chemistry ODE Solver in reactingFoam
  #1
New Member
 
Join Date: Jun 2011
Posts: 29
Rep Power: 6
Cyberholmes is on a distinguished road
I was just wondering about the meanings of the settings in the edoCoeffs dictionary:

odeCoeffs
{
solver SIBS;
eps 0.05;
scale 1;
}

'solver' I know chooses between different methods (RK, KRR4, and SIBS are the only three I know of that OpenFOAM can use). However, I don't know what 'eps' and 'scale' are used for here. Any help?

Thank you.
Cyberholmes is offline   Reply With Quote

Old   July 13, 2011, 13:59
Default
  #2
Senior Member
 
mturcios777's Avatar
 
Marco A. Turcios
Join Date: Mar 2009
Location: Vancouver, BC, Canada
Posts: 725
Rep Power: 18
mturcios777 will become famous soon enough
eps is the tolerance for convergence (the difference between successive timesteps before you accepts the answer) and scale is a multiplication factor for the time stepping (which can speed up convergence depending on your ODE.
ayhan515 likes this.
mturcios777 is offline   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
Working directory via command line Luiz CFX 4 March 6, 2011 21:02
rhopisofoam+scalartransportfoam VS reactingfoam without chemistry nileshjrane OpenFOAM 0 November 3, 2010 09:10
CH4 gas-phase reaction and stiff chemistry solver sonosun FLUENT 0 April 15, 2010 21:01
why the solver reject it? Anyone with experience? bearcat CFX 6 April 28, 2008 14:08
ODE solver extension to RKtime integration for CFD luca_g OpenFOAM Running, Solving & CFD 4 September 26, 2007 06:44


All times are GMT -4. The time now is 22:46.