Generation of acoustic sound in water by pulsed high power electrical discharges

在水中产生强大的脉冲声是基于通过施加电压脉冲以产生高于水的临界击穿场的电场而在一对浸没的金属电极之间产生的火花击穿。水的电场-时间击穿特性主要取决于水的电导率和电压脉冲的上升时间和持续时间，并确定了击穿机理，研究的主要目的是提高对水下放电相关物理和技术的理解，以使其成为各种应用中的强大声源。

The generation of powerful pulsed acoustic sound in water is based on the spark breakdown produced between a pair of immersed metallic electrodes by applying a voltage impulse to develop an electric field higher than the critical breakdown field of water. The electric field-time breakdown characteristics of water mainly depend on the water conductivity and on the rise time and duration of the voltage impulse and breakdown mechanisms were identified.The main aim of the research is to improve the understanding of the physics and technology related to underwater discharges for their potential use as a powerful acoustic source for various applications.