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-   -   Arrhenius reaction rate problem (http://www.cfd-online.com/Forums/openfoam/113794-arrhenius-reaction-rate-problem.html)

conceptone February 26, 2013 17:40

Arrhenius reaction rate problem
 
Hi,all, I have a question about the formula in ArrheniusReactionRateI.H,
the k basically calculated by the operator(),which returns:
if (mag(beta_) > VSMALL)
{
ak *= pow(T, beta_);
}

if (mag(Ta_) > VSMALL)
{
ak *= exp(-Ta_/T);
}
But I feel it's not like the total formula k = A * T^beta * exp(-Ta/T) , such as when beta < 0 , this happens in my kinetics file..
any explanation?
Thanks

conceptone February 26, 2013 17:55

right, as the mag() means the absolute value


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