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Flame extinction when uploading chemkin mechanism

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Old   May 29, 2021, 03:55
Default Flame extinction when uploading chemkin mechanism
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Pritam Dey
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Hello there!

I am trying to do Methane combustion using the EDM model including CO. In another thread I found a 4 equation chemkin mechanism-

ELEMENTS
H O C N
END
SPECIES
CH4 O2 CO2 CO H2O H2 N2
END
THERMO
END
REACTIONS KJOULES/MOLE
!Units are cm, mol, s, kJ/mol and K.
2CH4+O2=>2CO+4H2 7.824435194e13 0.0 0.12552
FORD/CH4 0.5/O2 1.25/
CH4+H2O=>CO+3H2 3.1E11 0.0 0.12552
CO+H2O=>CO2+H2 2.75E12 0.0 0.08368
2H2+O2<=>2H2O 4.44566E21 -1.0 0.16736
FORD/H2 0.5/O2 2.25/
RORD/H2O -1.0/
END


However, the temperature inside the combustion chamber is very low if I use this mechanism. I also tried a detailed gri mech 3 53 species mechanism. It's not working either. I would like to note that when I am using the default methane-air mixture (1 equation) I am getting reasonable values. I don't know much about Chemkin. It would be really helpful if you can help me with this problem.
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chemkin mechanism, combustion modeling, edm, methane combustion

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