Autoignition of kerosene (Jet-A)/air mixtures behind reflected shock waves

Ignition delay times have been measured for gas-phase mixtures of aviation kerosene Jet-A with air at pressures of 10 and 20 atm. The experiments have been carried out in a heated shock tube at a heating temperature of 150 °C. The measurements have been performed for the lean, stoichiometric and rich mixtures ( ϕ = 0.5 , 1 , 2 ) behind the reflected shock wave in the temperature range of 1040–1380 K. Ignition delay times have been measured using OH ∗ emission at 309 nm and – CH 3 absorption at 3.39 μm. The obtained results are in agreement with the results of other groups. The experimental data have been summarized in a single expression: τ ign = 1.31 × 10 - 3 [ μ s ] · ( P / 1 [ atm ] ) - 0.67 · ϕ - 0.6 · exp ( 30.4 [ kcal/mol ] / RT ) , where ϕ is the equivalence ratio. The measured ignition delay times for Jet-A/air mixtures are given in Annex tables.