Abstract
Keywords
Combustion, Emulsion Droplet, Phase transformation, Microexplosion, Hot Surface, Weibull distribution
Abstract
An experimental study has been made to reveal the process occurring in the liquid phase and the statistical characteristics for the onset of microexplosion of an emulsified fuel droplet burning on a hot surface. Photographic observation of the process in the liquid phase during induction period, and the measurements of the waiting time for the onset of microexplosion as well as droplet temperature are made for various properties of base fuel, water contents and surface temperatures. The Weibull analysis is applied to obtain the distribution function of the waiting time for the onset of microexplosion and to derive the empirical formula for the rate of microexplosion as a function of water volume and emulsion temperature.