Model constants in EDM

October 16, 2003, 03:53

Hi, in the equation for the net rate of production of species i in the eddy dissipation model, (eq. 13.1-25 and -26 in FLuent 6.0 manual), there are two empirical constants A and B. A=4, B=0.5 by default. I have two questions: 1) Obviously by reducing A and B , the net rate is reduced of production is reduced, I ma however not sure about the physical meaning of A and B, do they affect the mixing rate?

2) Does anyone have any references on these two factor, i.e. table what values to use for various fuel/oxidiser combinations.

Thanks, Jürgen

mrwan · November 9, 2017, 03:54

Chemical Reactor Modeling

October 16, 2003, 03:53	Model constants in EDM	#1
Jürgen Guest Posts: n/a	Hi, in the equation for the net rate of production of species i in the eddy dissipation model, (eq. 13.1-25 and -26 in FLuent 6.0 manual), there are two empirical constants A and B. A=4, B=0.5 by default. I have two questions: 1) Obviously by reducing A and B , the net rate is reduced of production is reduced, I ma however not sure about the physical meaning of A and B, do they affect the mixing rate? 2) Does anyone have any references on these two factor, i.e. table what values to use for various fuel/oxidiser combinations. Thanks, Jürgen

November 9, 2017, 03:54	Book of	#2
mrwan New Member mrwan Join Date: Dec 2015 Location: egypt Posts: 27 Rep Power: 11	Chemical Reactor Modeling

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
model constants in standard k-epsilon model	Yogini	Main CFD Forum	0	January 14, 2010 11:33
LES and combustion model	Margherita Cadorin	CFX	0	October 29, 2008 06:24
turbulence model constants	Jason	FLUENT	0	August 14, 2008 22:37
EDM constants A and B	Radha Raman Das	CFX	0	May 23, 2008 04:22
How EDM model works in CFX-5?	cfd guy	CFX	2	June 20, 2002 11:35