Shape oscillation of bubbles in the acoustic field

TL;DR

This paper investigates how air bubbles in water oscillate in shape when exposed to ultrasonic waves, focusing on the transition from volume to shape oscillations and their dependence on bubble size.

Contribution

It introduces the dynamics of bubble shape oscillations under ultrasonic excitation and explores the correlation between bubble size and oscillation mechanisms.

Findings

Shape oscillations occur in bubbles exposed to ultrasonic waves.

Transition from volume to shape oscillations depends on bubble size.

Correlation between bubble size and excitation mechanism is established.

Abstract

The authors introduce dynamics of multiple air bubbles exposed to ultrasonic wave while ascending in water in the present fluid dynamics video. The authors pay attention to the shape oscillation and the transition from the volume to the shape oscillations of the bubble. Correlation between the bubble size and the mechanism of the excitation of the shape oscillation is introduced.