model combustion in a back ward facing step

Mina_Shahi · April 21, 2011, 08:12

Hi

I want to define a source point in CFX to model combustion in a back ward facing step, actualy i want to define a source point for reaction progress and the unit is Kg/s, i have really no idea about this, because the reaction progress 0 shows no acombustion and 1 points to a burnt mixture, so what is this source point in Kg/s????

I would appreciate if some one could help me in this matter

joey2007 · April 22, 2011, 14:18

What do you intend to model? Ignition as a transient process?

Mina_Shahi · April 27, 2011, 04:09

No steady state

First i assume two regions in the chamber one consists of step with higher temperature and the other part with lower, but interface between to parts seemed behaves like a wall. so i want to use source point instead of a part with higher temperature.

April 21, 2011, 08:12	model combustion in a back ward facing step	#1
Mina_Shahi Member Mina Join Date: Apr 2011 Posts: 88 Rep Power: 15	Hi I want to define a source point in CFX to model combustion in a back ward facing step, actualy i want to define a source point for reaction progress and the unit is Kg/s, i have really no idea about this, because the reaction progress 0 shows no acombustion and 1 points to a burnt mixture, so what is this source point in Kg/s???? I would appreciate if some one could help me in this matter

April 22, 2011, 14:18		#2
joey2007 Senior Member Join Date: Mar 2009 Location: Europe Posts: 169 Rep Power: 17	What do you intend to model? Ignition as a transient process? __________________ - - - - - ------------------------------------------------------------------------ Please do not forget: I am not paid for answering your questions. Thousands of issues can cause a division by zero. Please do not capture a thread, with the argument: "I have the same issue ...."

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Transient simulation not converging	skabilan	OpenFOAM Running, Solving & CFD	14	December 16, 2019 23:12
How to write k and epsilon before the abnormal end	xiuying	OpenFOAM Running, Solving & CFD	8	August 27, 2013 15:33
combustion problem	mcnair	CFX	9	March 22, 2011 14:06
Combustion model for CAI/HCCI in AVL FIRE	stoodent	Main CFD Forum	0	July 19, 2009 18:37
can alternate combustion model by UDF?	Han Xingsi	FLUENT	0	September 1, 2008 02:08

April 27, 2011, 04:09		#3
Mina_Shahi Member Mina Join Date: Apr 2011 Posts: 88 Rep Power: 15	No steady state First i assume two regions in the chamber one consists of step with higher temperature and the other part with lower, but interface between to parts seemed behaves like a wall. so i want to use source point instead of a part with higher temperature.