Analysis of the mechanism of generation of the continuous cavitation noise component

It is demonstrated that a disturbance of periodicity of pulsations of cavitation bubbles at different points of an ultrasonic field may be one of the mechanisms of generation of the continuous component in the cavitation noise spectrum. The contribution of this factor increases with an increase in the degree of aperiodicity of perturbations induced by bubbles and is not related explicitly to the intensity of shock waves generated when bubbles collapse. Experimental data verifying this conclusion are presented.