Based on the pulsed current interception of underwater discharge, the characteristics of the steepness of electrohydraulic shock waves (EHSWs) and the peak value still increasing slowly with the electrical energy injection after the acceleration expansion phase of the plasma channel are investigated. The one-dimensional “piston” model of the EHSW generation is improved, and the calculation method for the EHSWs based on the “piston” model is modified. The modified model takes the change of starting points and the rising steepness of EHSWs into account, and the rising edge and peak value of EHSWs can be calculated more precisely.

中文翻译：

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基于放电电流截获的改进型电液冲击波一维“活塞”模型

基于水下放电的脉冲电流截获，研究了电液冲击波(EHSWs)陡度和峰值在等离子体通道加速膨胀阶段后随着电能注入仍缓慢增加的特点。改进了EHSW生成的一维“活塞”模型，修改了基于“活塞”模型的EHSW计算方法。修改后的模型考虑了起点的变化和EHSW的上升陡度，可以更精确地计算EHSW的上升沿和峰值。