Reactive Recoil and Pressure Pulsations with $1/f$ Power Spectrum under Conditions of Explosion Boiling of Jets of Superheated Liquid

The results are given of an experimental investigation of the reactive recoil of jets of boiling up liquids in a thermodynamically highly nonequilibrium mode of efflux. The experimental data are given in the dimensionless form using the thermodynamic similarity methods. The correlation is discussed between the abrupt decrease in the reactive power with a complete disintegration of the jet under conditions of explosion boiling. Local measurements are performed of pressure pulsations in a jet of superheated liquid with different mechanisms of vaporization. It is found that, under conditions of explosion boiling, the power spectrum of pulsations depends inversely proportionally on frequency ($1/f$ or flicker noise). This form of power spectrum implies the possibility of strong low-frequency pulsations of reactive recoil of boiling up flows.