Effect of preheating on liquid fuel evaporation on combustion in a model combustion chamber

A combustion model for a sprayed liquid fuel is developed, starting from the assumption that combustion of an individual drop is impossible, and the droplets are completely entrained in the moving medium. The model gives the a flame length close to that observed experimentally. It is established that the preheat time of the droplet is roughly the same as its evaporation time, and the temperature change in the air basically affects the droplet preheating and only weakly affects the droplet evaporation.