Atomization of superheated water through a divergent nozzle

The atomization of metastable superheated water injected into the atmosphere from a convergent-divergent nozzle at a temperature of 240–260$^{\circ}$С was studied experimentally. The dispersion composition of the spray jet has a bimodal character with a predominance of submicron droplets, whose proportion increases with increasing temperature and reaches 80% at the nozzle outlet at a water temperature of 260$^{\circ}$С. The influence of droplet coagulation on the distribution of the proportion of large droplets along the length of the spray jet was estimated.