Nonlinear oscillation of a microbubble in the ultrasound field

摘要

When the micro bubbles are subjected to the ultrasonic oscillation field, it takes on strong nonlinearity as the increase of ambient pressure amplitude. As these dynamics of bubbles are strongly influenced by the thermal phenomena inside them, it is necessary to take these phenomena into account to analyze the behavior of the micro bubbles precisely. The volumetric change and the acoustic emission from a single micro air bubbles in pure water are numerically simulated.