Evaporation of emulsion droplets in pulsation mode

Water-fuel emulsions with a water content of up to 70% are flammable. Depending on the ambient temperature, several evaporation modes can occur in an emulsion droplet. Between conventional evaporation according to the d2 law and a micro-explosion, a non-evaporation pulsation is possible. In this case, growths appear on the surface of the droplet, which, when destroyed, eject the emulsion material into the gas medium. After the emulsion is created, the globules begin to enlarge under the action of the ultrasonic disperser. It is the vapour formation on such globules that starts the growth of the vapour bubble. First of all, they grow near the junction of the thermocouple, and as the temperature of the emulsion increases, they grow in its middle. With increasing temperature, the rate of growth of the vapour bubble size increases, and the maximum size decreases. The size pulsation period decreases with increasing temperature.