CFD Online Logo CFD Online URL
Home > Forums > CFX

N2 mass fraction increase during the combustion

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

LinkBack Thread Tools Display Modes
Old   August 15, 2011, 17:20
Default N2 mass fraction increase during the combustion
New Member
Join Date: Jun 2010
Posts: 3
Rep Power: 9
Gabriel_ is on a distinguished road
Hi friends.
I am simulating a spark-ignition engine with the flamelets libraries for hydrogen and methane. I complete the both simulations, but the methane's simulation shows an increase in the mass fraction of N2 when the spark is released. I tried different models of NO formation, increase the time step, refine the mesh, but the same problem persists.
I would like to know if any one already had this kind of problem and if anyone has some idea about what is happening.

Thanks for your attention!
Gabriel_ is offline   Reply With Quote


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
combustion problem mcnair CFX 9 March 22, 2011 15:06
UDF for Species Mass Fraction Gradient *IN SPECIFIC ZONE * -- e.g. along axis of sym. ksiegs2 Fluent UDF and Scheme Programming 0 February 27, 2011 13:55
I need UDF help. S.Whitney FLUENT 0 October 15, 2007 11:29
gradient of species mass fraction zhou FLUENT 0 March 3, 2004 23:55
Mass fraction via Cel file at outlet Jens CFX 3 April 28, 2003 09:14

All times are GMT -4. The time now is 01:59.