Premixed combustion in porous media

drb764 · February 9, 2011, 08:31

Hello,

i'm trying to simulate the premixed combustion of methane in a porous burner which has an inlet of ~3cm and an outlet of ~20cm. Ahead of the outlet there are a flame trap and the combustion zone.

I had good results and convergence using Sheer Stress Model for Turbulence for cold flows, bad using the k-epsilon model.

Maybe you have some tips (or where to find them) for modeling the combustion (e.g. which could be best model and how to adopt it best) since i've tried a lot different models (eddy dissipation, combined with finite rate chemistry, bvm).

Either the calculations converged only to e-3 to e-4 or the residuals increased again after some 200 iterations. Surely i can give more information if needed.

Thank you.

Best konrad

riccia · October 17, 2011, 08:22

hey konrad,
i was wondering, have you solved your issues with this topic?

February 9, 2011, 08:31	Premixed combustion in porous media	#1
drb764 New Member K. D. Join Date: Feb 2011 Posts: 6 Rep Power: 15	Hello, i'm trying to simulate the premixed combustion of methane in a porous burner which has an inlet of ~3cm and an outlet of ~20cm. Ahead of the outlet there are a flame trap and the combustion zone. I had good results and convergence using Sheer Stress Model for Turbulence for cold flows, bad using the k-epsilon model. Maybe you have some tips (or where to find them) for modeling the combustion (e.g. which could be best model and how to adopt it best) since i've tried a lot different models (eddy dissipation, combined with finite rate chemistry, bvm). Either the calculations converged only to e-3 to e-4 or the residuals increased again after some 200 iterations. Surely i can give more information if needed. Thank you. Best konrad

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Porous media setup issues in Fluent	Bernard Van	FLUENT	29	January 26, 2017 05:09
Modelling Combustion in Porous Zone	tanjinjack	FLUENT	2	September 26, 2016 05:10
porous media combustion	zuby	FLUENT	2	August 31, 2015 05:42
combustion in porous media burner	zuby	ANSYS	0	July 27, 2009 03:26
Codes for Premixed Combustion in porous media.	Seaspace	Main CFD Forum	0	June 27, 2001 22:18

October 17, 2011, 08:22		#2
riccia New Member m Join Date: May 2011 Posts: 6 Rep Power: 15	hey konrad, i was wondering, have you solved your issues with this topic?