Combustion

skumar112 · May 19, 2017, 05:58

Hello,

I am looking at doing a validation for my combustion model and i wanted to know how I could display the flame front (so i can get flame length and width) from the species fraction model? I am using the species fraction model to model the combustion

LuckyTran · May 20, 2017, 10:33

Intuition is nice but to come up with a quantitative definition for things is tough. The problem is the governing equations are not written in terms of where the flame is, but in terms of conserved quantities: mass, momentum, energy, etc. This is like the boundary layer thickness problem, but more complicated.

First you have to define what the flame front is in terms of the variables that you have.

May 19, 2017, 05:58	Combustion	#1
skumar112 Member sunil kumar Join Date: May 2016 Posts: 80 Rep Power: 9	Hello, I am looking at doing a validation for my combustion model and i wanted to know how I could display the flame front (so i can get flame length and width) from the species fraction model? I am using the species fraction model to model the combustion

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May 20, 2017, 10:33		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,672 Rep Power: 65	Intuition is nice but to come up with a quantitative definition for things is tough. The problem is the governing equations are not written in terms of where the flame is, but in terms of conserved quantities: mass, momentum, energy, etc. This is like the boundary layer thickness problem, but more complicated. First you have to define what the flame front is in terms of the variables that you have.