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-   -   Premixed combustion model - FLUENT (http://www.cfd-online.com/Forums/fluent/69918-premixed-combustion-model-fluent.html)

Mowan November 9, 2009 10:50

Premixed combustion model - FLUENT
 
Hello

I want to model perfectly premixed combustion in a tunnel, using propane/air mixture at 0.85 equivalence ratio.

If i use premixed combustion model in fluent ,

how do i specify the mixture and the equivalence ratio ??

tejengineer January 17, 2010 16:29

I am having the exact same problem. When I select the premixed combustion model in FLUENT, I cant select the mixture I want to combust in the domain. As soon as you select the premixed model, FLUENT disables the mixture materials option in the material panel, hence you can only select fluids. (It doesnt let you create the mixture from the available fluids either!)

However when you use other combustion models such as species transport, you can select mixture materials easily. I don't know why this problem of specifying mixture materials is particular to the premixed combustion model. If anyone can help I would be extremely grateful.

smartgyg May 6, 2011 22:45

Quote:

Originally Posted by tejengineer (Post 242860)
I am having the exact same problem. When I select the premixed combustion model in FLUENT, I cant select the mixture I want to combust in the domain. As soon as you select the premixed model, FLUENT disables the mixture materials option in the material panel, hence you can only select fluids. (It doesnt let you create the mixture from the available fluids either!)

However when you use other combustion models such as species transport, you can select mixture materials easily. I don't know why this problem of specifying mixture materials is particular to the premixed combustion model. If anyone can help I would be extremely grateful.

hi.I have the same question as you did, have you solved your problems? I am simulating the combustion in engine using fluent, in the case, there are no inlet and outlet, I dont know how to give the mixture feul in the zone!!

Jenny_W May 7, 2012 14:47

Hi Everyone,
I wonder if any of you manage to solve the problem. I am having an exact problem. I try to run lean premixed combustion simulation but the premixed combustion model in FLUENT does not allow me to specify the mixture and equivalence ratio. Could anyone kindly advise me how to solve this problem, please? Thank you very much.
Regards,
Jenny

ChenZhan May 31, 2012 20:04

premixed combustion in fluent,how to set bc
 
hi.I have the same question as you did, have you solved your problems? I am simulating the combustion in engine using fluent, in the case, there are no inlet and outlet, I dont know how to give the mixture feul in the zone!!


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