INFLUENCE OF THE INITIAL TEMPERATURE OF WATER DROPLETS ON CHARACTERISTIC OF THEIR DEFORMATION IN THE GAS AREA

The article presents scheme, technique and experimental investigation results of influence of the initial temperature of water droplets on characteristic of their deformation at movement in the gas area. The modern cross-correlation systems and high-speed video registration equipment were used for the experimental researches. It is established that the measurement errors of droplet sizes are no more than 6 %, times — 4 %, cycles length — 7 %. Influence of the initial temperature of water droplets on characteristic times and length of “deformation cycles” is established. Deformation amplitudes of droplets within several cycles are specified. It is shown that with growth of the initial temperature of droplets the transition times from spherical forms to ellipsoidal in “deformation cycles” increase. Approximating expressions for a predictive assessment of times and lengths of “deformation cycles” of water droplets at their movement in the gas area are received. It is shown that the heated water droplets move slowly inside a fire zone and beyond its limits. This feature leads to an intensification of their evaporation.