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

Stretch and Quenching in Premixed Turbulent Flames

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 2, 2006, 14:05
Default Stretch and Quenching in Premixed Turbulent Flames
  #1
JK
Guest
 
Posts: n/a
Hello,

Could anyone tell me where I get experimental information relating the laminar burning velocity to flame stretch (tangential strain + curvature) from an unstrained to a fully quenched state. Specifically I am interested in the functional form (shape of curve) of the burning velocity to stretch for lean premixed combustion of propane and also of approx stoichimetric methane flame.

I am aware that these phenomena are very much problem dependent, however, in order to model the effect of stretch on the laminar burning velocity in a premixed flame, I need some relatioship other than the classical williams-clavin relatioship which says that S_T/S_L = (1 - Ma Ka) where Ma is Markstein No and Ka is reduced Karlovitz number based on the stretch. This model is applicable only for 'low' strain rates ... although I have seen it used in the literature to model full quenching.

Any help would be much appreciated.
  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



All times are GMT -4. The time now is 03:04.