Boiling of a jet of superheated water with outlet through a nozzle with a square section

The results of an experimental study of the dynamics of boiling of a jet of superheated water flowing from a high-pressure chamber through a short, square duct into the atmosphere are presented. The change in the jet shape is traced at various degrees of overheating. The effect of complete disintegration of the jet is established: a cone with a widened opening angle. A loss of stability of full jet opening was found at a temperature of $T = 540$ K. For various modes of boiling in dimensionless coordinates, the dependence of the change in the angle of the jet opening on the degree of overheating of the working fluid is obtained.