Partially premixed combustion problem

shashankvu · August 31, 2013, 14:40

Hey all,

I am working on a partially premixed flame burner.I have a problem in defining the species. I have 2 inlets, 1st inlet has Nitrogen, 2nd is acetylene and air. The flame is in an air environment. When I choose partially premixed combustion model I have only two options, fuel and oxidizer, so in the fuel I mention the mole fraction of acetylene and oxygen and nitrogen and in the oxidizer only Nitrogen for the one of the inlet but now because of that I cannot specify air as my fluid surface. How can I supply an additional stream? in this mode of the model.

Any help is appreciated. Thanks!

potion · October 6, 2013, 13:21

hi, in your case, you must chose partially-premixed

sanjeetlimbu · April 21, 2015, 18:45

Dear sir

i am trying to ignite the mixture by compression stroke 30ms , to attain high temp near 770K, using the chemkin file and dynamic mesh.

But i am not seeing the temperature rise in compression stroke.

Pl suggest what is wrong

August 31, 2013, 14:40	Partially premixed combustion problem	#1
shashankvu New Member shashank vummidi Join Date: Aug 2013 Posts: 3 Rep Power: 13	Hey all, I am working on a partially premixed flame burner.I have a problem in defining the species. I have 2 inlets, 1st inlet has Nitrogen, 2nd is acetylene and air. The flame is in an air environment. When I choose partially premixed combustion model I have only two options, fuel and oxidizer, so in the fuel I mention the mole fraction of acetylene and oxygen and nitrogen and in the oxidizer only Nitrogen for the one of the inlet but now because of that I cannot specify air as my fluid surface. How can I supply an additional stream? in this mode of the model. Any help is appreciated. Thanks!

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October 6, 2013, 13:21		#2
potion New Member sofiane ouali Join Date: Oct 2013 Posts: 3 Rep Power: 13	hi, in your case, you must chose partially-premixed