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Old   February 13, 2001, 20:40
Default about finite reaction model in fluent
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I want to use finite rate reaction model to simulate the burning of carbon-monoxide(CO) and oxygen(O2),including backward reaction.

If someone know the Pre-exponential Factor and Activation Energy(j/kgmol),please tell me. Thank you.

Thank you.

lizihujx 2000.2.14
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Old   February 14, 2001, 20:22
Default Re: about finite reaction model in fluent
Greg Perkins
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From Westbrook and Dryer 1981 (email me for exact ref since I don't have it with me today),

I got for the forward reaction rate (kmol/m3-s)

kf = 3.98e14 * exp(-E/RT) [CO]^1 [H2O]^0.5 [O2]^0.25

where E = 167.36 KJ/mol.

According to recent papers the backward reaction they present causes numerical problems and several authors ommit it. I did the same, but I haven't played with this much yet but intend to soon.

ps: have you tried the standard fluent reaction model???

Unfortunately, I can't work out where Fluent get their numbers from in the propdb.scm database - does anybody know? How can we use there numbers when we don't know where they come from????????


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Old   February 16, 2001, 09:13
Default Re: about finite reaction model in fluent
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It seems like the data is consistent with what is found in chemkin, some guy in Israel has an online repository that uses slightly different temperature intervals for the interpolation polynomials:


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