Amplification of supersonic micro-jets by resonant inertial cavitation-bubble pair
arXiv:2401.02320 · doi:10.1103/PhysRevLett.132.104004
Abstract
We reveal for the first time by experiments that within a narrow parameter regime, two cavitation bubbles with identical energy generated in anti-phase develop a supersonic jet. High-resolution numerical simulation shows a mechanism for jet amplification based on toroidal shock wave and bubble necking interaction. The micro-jet reaches velocities in excess of 1000 m/s. We demonstrate that potential flow approximation established for Worthington jets accurately predicts the evolution of the bubble gas-liquid interfaces.
17 pages, 8 figures