Highlights Enhancement effect of electrostatic field on ultrasonic cavitation is explained. Model for a nonspherical bubble in compressible liquid under the coupling effect of ultrasound and electrostatic field was developed. Effect of different electric field strengths on the bubble cavitation was analyzed theoretically. We compared gas pressure, temperature and cavitation threshold with and without electric stress.

A dynamic model for a double-bubble system in compressible liquid under the coupling effect of ultrasound and electrostatic field was developed here. In this study, we mainly discussed the effect of the interaction on the investigated bubble using the numerical solutions to the theoretic model. The variable parameters are the distance between bubble centers and the initial radius of the adjacent bubble. In addition, we applied approximate equations to analyse variations of the internal gas pressure and temperature of a bubble. We found that, the oscillation amplitude of a bubble with an adjacent bubble significantly reduces, compared to that of an isolated bubble.

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