Ignition, puffing and sooting characteristics of kerosene droplet combustion under sub-atmospheric pressure

The ignition, puffing and sooting characteristics of Chinese RP-3 kerosene droplet burning have been studied using high-speed, OH* chemiluminescence soot thermal radiation imaging. experiments were conducted in air at standard temperature sub-atmospheric pressures ranging from 0.2 bar to 1 bar. was supported by a thermocouple tip ignited retractable coiled heating wire. results showed that the ignition delay time increased with decrease ambient pressure, due an distance between oxygen molecules. Steady disruptive identified following ignition. images spherical flame longer standoff under lower pressure. intensity observed be enhanced reduction decreased pressure found emission.