CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Running, Solving & CFD

Ignition and flame propagation with XiFoam for a few meters long comput. domains

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

LinkBack Thread Tools Display Modes
Old   April 23, 2013, 07:25
Default Ignition and flame propagation with XiFoam for a few meters long comput. domains
New Member
Join Date: Nov 2012
Posts: 10
Rep Power: 6
Gloq is on a distinguished road
Dear all,

I searched for a topic like that on the forum, but didn't find a similar one.

Actually, I try to model ignition and flame propagation in a box, whose edges are 3 m long.

I use XiFoam (in the RANS framework) and the corresponding ignition model, with the parameters of the tutorial 'Moriyoshi_Homogeneous'

Due to the size of the computational domain, I have to work with cells whose caracteristic widht is between 0.5-1 cm.

What happens is : a burnt gases kernel is initiated and then slowly diffuses without propagation.
I tried to refine the mesh in ignition zone. What happens : burnt gases pocket is created, propagation of the flame front starts and then stops, out of the refined zone.

The ignition model seems to be very sensitive ...
Do you use a personal model or one detailed in the literature ?
Or as is, is the ignition model linked to XiFoam satisfying for you ? Is there any special trick to make work the transition ignition/flame propagation ?

Thanks in advance for your help.

Gloq 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
Preferential flame propagation normal to cell faces in Xoodles rbauwens OpenFOAM Running, Solving & CFD 0 March 27, 2007 11:32

All times are GMT -4. The time now is 13:41.