Bubble acoustics explores sound generated during bubble formation, oscillation, and collapse, with applications in boiling systems and underwater environments. The Minnaert frequency predicts the natural oscillation of a bubble, influenced by surface tension and fluid inertia. During pinch-off, rapid necking and liquid inrush excite volume oscillations, radiating sound that reveals bubble size, pressure, and fluid properties.

Bubble oscillations are modeled using a spring-mass-damper system, capturing how external disturbances shape acoustic signatures. Experimental techniques, including hydrophones and high-speed imaging, combined with simulations, refine these models and link theory to observations.

This research has applications in monitoring critical heat flux to prevent boiler failures, underwater communication, and optimizing boiling heat transfer. By bridging fluid dynamics and sound generation, bubble acoustics connects fundamental physics with practical innovations, advancing our understanding of complex multiphase systems.