Pulsed high-current discharge in water is accompanied by strong electromagnetic field and mechanical shock

which makes it difficult to directly measure the near-field shock characteristics. In order to explore the propagation characteristics of shock wave in underwater pulsed high-current discharge

a shock propagation characteristic model based on the classical empirical formula of underwater explosion was proposed. The generation process of first and second shock waves in underwater pulsed high-current discharge was described from the perspective of dynamics. A comprehensive discharge test platform was established. The propagation process of shock wave was captured by the shadow method and high-speed camera technology. The peak value of shock wave was obtained by combining the Tait equation and Rankine-Hugoniot equation through image analysis. The shock waves at different positions were obtained by pressure sensors

and the applicability of the model was evaluated. The results show that the model can be used to describe the propagation characteristics of shock wave in underwater pulsed high-current discharge

and can provide theoretical guidance for the industrial application of shock wave.