Equivalence ratio CHEMKIN

  • Last Post 12 June 2018
Karna posted this 14 March 2018


In the manual, the given example is for simple propane air combustion and for that stoichiometric equation is easy to build. But what if we have a complicated combustion reaction with multiple fuels and multiple oxidizers as I wrote below and you don't know stochiometric reaction for that?


a*C2H2 + b*H2 + c*(O2+3.76N2) + d*CO2 + e*N2 -----> products

Where, a=0.3124, b=1.6776, c=2.1958, d=0.3702, e=1.483792

What will be an equivelence ratio for the above equation? 


Basically, to find out equivalence ratio you need numerator and denominator. The numerator is related to fuel/oxidizer value at specific state which is easy to figure out in my question. However, denominator part is related to a stoichiometric condition, which I don't know in my case since this is not a simple prepare air combustion as stated in the manual. How can chemkin be useful in this case to find out equivalence ratio? 


In other words, how can I get the equivelence ratio from chemkin when I don't know the stoichiometric equation (denominator part of the equivalence ratio)?  




sridharsahoo366@iitkgp.ac.in posted this 12 June 2018

Hey are you using ansys Forte for simulating ic engine problems ?

please mail me if you do sridharsahoo366@iitkgp.ac.in