soot mixture fraction

aravind vashista · September 14, 2020, 05:02

Hi,
I am modeling methane - air non premixed swirl flame. I am using non-premixed flamelet approach along with soot using one step method. I know that fuel mixture fraction at fuel inlet is 1. but what is soot mixture fraction at fuel inlet and air inlet respectively. I hope I will get valuable suggestions in this regard.

thank you

lei · September 20, 2020, 16:59

Hi ARAVIND, you do not need to assign any soot mole fraction in the fuel and air inlet, or just assign 0 because soot is only formed during combustion. If you include a soot formation model in the CFD software, it will calculated based on your local mixture fraction and temperature etc.

September 14, 2020, 05:02	soot mixture fraction	#1
aravind vashista Member ARAVIND SRIDHARA Join Date: Jan 2017 Posts: 32 Rep Power: 9	Hi, I am modeling methane - air non premixed swirl flame. I am using non-premixed flamelet approach along with soot using one step method. I know that fuel mixture fraction at fuel inlet is 1. but what is soot mixture fraction at fuel inlet and air inlet respectively. I hope I will get valuable suggestions in this regard. thank you

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Simulation crashes when turbulence is on (reactingMultiphaseEulerFoam)	remidemol	OpenFOAM Running, Solving & CFD	3	May 26, 2020 05:47
Problem of simulating of small droplet with radius of 2mm	liguifan	OpenFOAM Running, Solving & CFD	5	June 3, 2014 02:53
On the damBreak4phaseFine cases	paean	OpenFOAM Running, Solving & CFD	0	November 14, 2008 21:14
CFX Solver Memory Error	mike	CFX	1	March 19, 2008 07:22
mixture fraction	Sheng Chen	Main CFD Forum	0	October 6, 2004 01:33

September 20, 2020, 16:59		#2
lei New Member Lei Chen Join Date: Mar 2010 Posts: 21 Rep Power: 16	Hi ARAVIND, you do not need to assign any soot mole fraction in the fuel and air inlet, or just assign 0 because soot is only formed during combustion. If you include a soot formation model in the CFD software, it will calculated based on your local mixture fraction and temperature etc.