Burning a CH4-H2 Mixture

November 10, 2007, 09:15

Dear CFD user

I want to run a reacting case burning an homogeneous mix of Methane and Hydrogen (of igual proportion 50:50). Unfortunately it seems this mixture reaction is not present in the librairies. What I tried instead is to established two reacting material (CH4-Air mixture and H2 Air mixture: both beeing reacting mixture). My domain was then multi-component field. I established both component as homogenous. Unfortunatly I am stock with this error:

One constraint equation is needed in the fluid model section for the multi-component fluid. Hydrogen Air mixture.

I cannot run my case and the solver give me an error. Does anybody know how to set-up a Burning Mixture of two different fuel?

Regards

November 12, 2007, 16:10

The libraries provided with CFX are for demonstration. For real use the tool CFX-RIF is required. With CFX-RIF you can generate libraries.

November 12, 2007, 18:01

Thanks joey

Is there anyone who would have this library already done? I do not have access to this software who generate the librairies. From the ANSYS page, it seems pretty easy to generate in my case.

Regards

November 10, 2007, 09:15	Burning a CH4-H2 Mixture	#1
Jonathan Lemay Guest Posts: n/a	Dear CFD user I want to run a reacting case burning an homogeneous mix of Methane and Hydrogen (of igual proportion 50:50). Unfortunately it seems this mixture reaction is not present in the librairies. What I tried instead is to established two reacting material (CH4-Air mixture and H2 Air mixture: both beeing reacting mixture). My domain was then multi-component field. I established both component as homogenous. Unfortunatly I am stock with this error: One constraint equation is needed in the fluid model section for the multi-component fluid. Hydrogen Air mixture. I cannot run my case and the solver give me an error. Does anybody know how to set-up a Burning Mixture of two different fuel? Regards

November 12, 2007, 16:10	Re: Burning a CH4-H2 Mixture	#2
joey2007 Guest Posts: n/a	The libraries provided with CFX are for demonstration. For real use the tool CFX-RIF is required. With CFX-RIF you can generate libraries.

November 12, 2007, 18:01	Re: Burning a CH4-H2 Mixture	#3
Jonathan Lemay Guest Posts: n/a	Thanks joey Is there anyone who would have this library already done? I do not have access to this software who generate the librairies. From the ANSYS page, it seems pretty easy to generate in my case. Regards

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
mixture mass continuity eqn v.s. volumetric mixture continuity eqn	kaifu	ANSYS	0	June 9, 2011 09:42
mixture mass continuity v.s. volumetric mixture continuity in pressure equation	kaifu	OpenFOAM	0	June 9, 2011 09:14
Improvement to the update of T_ et al in hMixtureThermoC and hhuMixtureThermoC	richpaj	OpenFOAM Bugs	2	October 9, 2008 23:14
Variable composition mixture .vs. reacting mixture	Ting Wen	CFX	0	January 7, 2008 07:04
Simulate a cylindrical combustor burning methane CH4 in air using the finiterate chemistry model	zou_mo	OpenFOAM Running, Solving & CFD	3	March 30, 2006 00:50