Critical Conditions for Single Droplets Ignition and Combustion

This paper presents an installation and some results of experimental study of droplet ignition and combustion in hot gas and under a laser beam irradiation. Emphasis is on correlation between the critical diameter of droplet and characteristics of environment (temperature, pressure, gravity level, and content of gas-mixture). Dependence of ignition and subsequent combustion on heat and mass-transfer conditions is investigated in normal and low-gravity environment. A specific feature of this study is investigation of ignition of energetic solutions (including the aqueous solutions) as well as ignition of individual liquids.