[Plum_Flavoured_Biscuit]

Basically,



If I could be directed to a Forum where CHEMKIN 18.2 is discussed in detail that would be great, but basically my problem is this.


I have run, experimentally, an axissymetric Counterflow flame that was fed by 3 SLPM CH4 and 5 SLPM air. Rich flame, I know, but it burns. However, I can simulate this in Cantera using the GRI 3.0 Mechanism. It's CHEMKIN that's the problem. As far as I am aware, for nozzles that are 11.2mm ID and a gap of 11.2mm (for strain unity) with a combustion pressure of 1 atm with inlet temperatures of 300K I should get the following units to insert into CHEMKIN:


FUEL (CH4) --> 3 SLPM = 3.58500E-05 kg/s = 0.364 kg/m^2.s = 0.508 m/s for that nozzle.


Oxidiser (Air) --> 5 SLPM = 1.07750E-04 kg/s = 1.094 kg/m^2.s = 0.846 m/s for that nozzle.


It's a strained flame, sure. But if you take the example for an axissymetric flame on the Cantera website http://www.cantera.org/docs/sphinx/h...ion_flame.html and do a few switches of flows, It runs for that Chemical Kinetic Mechanism, which is the GRI 3.0 Mechanism.


If I try this in CHEMKIN 18.2, I get a flat line. If I use the Cantera example flows, 0.72 kg/m^2/s air and 0.24 kg/m^2/s fuel (but CH4 instead of C2H4) I get nada as well, no combustion.



I can however make this work with flows 1/5 of the ones above, for a gap of 2cm. It has worked for 0.048 kg/m2-sec fuel and 0.144 kg/m2-sec air (air being 78% N2, 21% O2 and 1% Ar) but is being difficult where it should work.


First thoughts: My flow numbers are wrong. Those Mass Fluxes used for Chemkin are wrong.



Second thoughts: kg/m2-sec (chemkin) isn't the same as Kg/m^2/s (cantera.)


Now, look, I understand that it's unlikely anyone will read this, But if in the very least, can I be directed to somewhere that deals in CHEMKIN 18.2?
Thanks to those of you who have looked.
Regards T