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Unit of rate constants??

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Old   March 7, 2007, 19:51
Default Unit of rate constants??
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I am modelling coal combustion using either intrinsic kinetics or kinetics/diffusion limited model. Is anyone aware about the units of pre exponential factor used in the fluent?? My hand calculation suggest atleast 100 times less value than predicted by Fluent. I am using units of kg/(m2)S(Pa) for the preexponential factor.
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