ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 45, Number 2
JKCSEZ 45(2)
April 20, 2001 

The ignition of NH₃-NO-Ar mixtures was examined in the temperature range of 1675-2391 K behind reflected shock waves. The ignition delay times were measured by monitoring pressure profiles and the OH emissions at 1.0 cm from the end wall. A correlation between ignition delay times and concentrations of gases could be summarized in the form of mass-action expression. To complement the experiment, computer modeling study of the ignition of NH₃-NO-Ar mixtures was carried out using various mechanisms reported previously.The sensitivity analysis shows the reaction of NH₂ + NO → NNH + OH is the most important step in the ignition of NH₃-NO-Ar mixtures.