Bubble dynamics and observations #1

Abstract

The dynamics of acoustic cavitation bubbles can be complicated due to their nonlinear nature. They comprise several aspects on different spatial and temporal scales: The interplay of bubble and sound field leads to volume oscillations and partly strong implosion of the gas phase, which induces further effects like chemical reactions and luminescence. Acoustic forces lead to bubble translation, interaction, and merging. Non-spherical shape modes can cause deformations and splitting, and the bubble collapse can take place with formation of a fast liquid jet in the case of rapid translation, adjacent bubbles, or solid objects. In multi-bubble systems, acoustic field geometries and bubble interactions lead to emergence of a variety of characteristic dynamical bubble structures. A brief review of these issues is given with an emphasis on observations in experiments.