Cantera simulation of H2 + NH3 mixture in a constant vol combustion chamber

[Nikita Lahoti]

I am trying to do Cantera simulation of H2+NH3 mixture in a control vol combustion chamber. My main aim is to plot pressure rise curves and heat release rates. The problem I am facing is in finding an appropriate code for this problem. I got a code in Cantera Documentation- "Adiabatic Combustion of a ideal gas" but in that code if I am giving an initial temperature of 300 K , the mixture doesn't ignite at all ; it only ignites at T=1000K but that is not my mixture's initial temp. I don't want to introduce radicals for the ignition as that will change the chemistry. I want a way to introduce spark in this combustion at the beginning to ignite the mixture. Can someone help me modify the code for that?

Regards 

Nikita Lahoti