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COG(Coke Oven Gas) Combustion Problem in "W" Type Radiant Tube

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Old   May 20, 2009, 23:55
Default COG(Coke Oven Gas) Combustion Problem in "W" Type Radiant Tube (3D)
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Kang Jung Shin
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Hi, Everyone

I'm trying to solve heat problem of "W" type radiant tube

<Grid Design>
-------------------- <= Fuel & Air Supplying Line
(
--------------
)
--------------
(
-------------------- => Exhaust Gas Out

When setting up CFD-ACE Model,

#1. Chemical Reaction : CH4+2O2 -> CO2 + 2H2O "For Whole area of tube"
-> Is It Right?

#2. And When I do set up CFD-ACE Model like #1,
In the 1st straight line(the most upper line), There is no CH4 mass fraction (=0) at all!!
Why this happens? Did I do something wrong?

Last edited by sdlafkj; May 21, 2009 at 00:28.
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Old   May 21, 2009, 02:22
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Kang Jung Shin
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Hi, All. I got a clue~ Sorry to produce garbage..
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Old   February 19, 2011, 02:54
Default Coke Oven Gas combustion in W radiant tube
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Hi,
I am trying to model a W radiant tube for burning COG( containing mostly H2 and CH4). can u give me a basic idea for modeling in CFD. The flow of air and gas are co-axial.

1) can I model it in 2D, or 3D is necessary?
2) which reaction chemistry can be used. I want to use CH4 and H2 combustion chemistry.


I want to model it using ANSYS-FLUENT
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