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

SIBS step size underflow

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 8, 2012, 06:15
Default SIBS step size underflow
  #1
Member
 
Abhishek
Join Date: Dec 2010
Posts: 37
Rep Power: 5
Abhishekd18 is on a distinguished road
Hello all,

I am running dieselEngineFoam with spray. I am getting following error some time after spray injection. I checked the chemistryProperties file and tried using different solvers for ODESolver. But it didn't help. Can anyone help me on this?

Thanks.

--> FOAM FATAL ERROR:
step size underflow

From function ODES::SIBS
in file ODESolvers/SIBS/SIBS.C at line 155.

FOAM exiting
Abhishekd18 is offline   Reply With Quote

Old   February 15, 2012, 03:42
Default
  #2
Member
 
Abhishek
Join Date: Dec 2010
Posts: 37
Rep Power: 5
Abhishekd18 is on a distinguished road
Ok. I got the reason. The solution becomes unstable after layer addition. Very high velocity (7783 m/s). Can anyone suggest how to control the solution after layer addition?
Abhishekd18 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
How to write k and epsilon before the abnormal end xiuying OpenFOAM Running, Solving & CFD 8 August 27, 2013 15:33
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 17 August 22, 2009 03:59
time step size in Custom Field Function Tong FLUENT 0 May 2, 2008 15:51
Could anybody help me see this error and give help liugx212 OpenFOAM Running, Solving & CFD 3 January 4, 2006 18:07
natural convection - time step size co2 FLUENT 7 June 3, 2004 21:56


All times are GMT -4. The time now is 10:32.