Abstract

Nonlinear dynamics of bubbles in liquid in the presence of the resonance and noise acoustic fields is analyzed. The effect of fluctuations associated with the random field component is found to be most pronounced in the vicinity of the bifurcation values of the field amplitude and detuning, these values corresponding to changes in the number of stable oscillatory states of a bubble. The radiation spectrum of a single bubble in the vicinity of the fundamental resonance is determined. In the framework of the proposed model, a comparison of this spectrum with the real spectrum of acoustic radiation caused by cavitation is performed.

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