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首页> 外文期刊>IEEE Transactions on Plasma Science >Underwater Electrical Explosion of Wires and Wire Arrays and Generation of Converging Shock Waves
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Underwater Electrical Explosion of Wires and Wire Arrays and Generation of Converging Shock Waves

机译：电线和电线阵列的水下电爆炸以及会聚冲击波的产生

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摘要

A brief review of the results obtained in recent research of underwater electrical explosions of wires and wire arrays using microsecond-, submicrosecond-, and nanosecond-timescale high-current generators is presented. In a microsecond-timescale wire explosion, good agreement was attained between the results of experiments and the results of magnetohydrodynamic calculations coupled with equations of state (EOS) and modern conductivity models. Conversely, in a nanosecond-timescale wire explosion, the wire resistance and the EOS were modified in order to fit experimental data. In experiments with cylindrical and spherical wire arrays, generation of a converging shock wave (SW) was demonstrated allowing formation of an extreme state of water in the vicinity of either the axis or the origin of the SW’s implosion. In addition, it is shown that SW convergence in superspherical geometry allows one to achieve larger values of pressure, density, and temperature of water in the vicinity of the axis of convergence than in the case of a spherical implosion. The results of experiments and numerical analysis showed that a cylindrical SW keeps its symmetry along the main path of its convergence. In addition, it is shown that underwater electrical explosion of an X-pinch wire configuration and a cone wire array allows one to generate fast jets of metal and water, respectively, without using chemical explosions.
机译：简要回顾了最近在使用微秒，亚微秒和纳秒级的大电流发生器对电线和电线阵列进行水下电爆炸研究中获得的结果。在微秒级的导线爆炸中，实验结果与磁流体动力学计算结果，状态方程（EOS）和现代电导率模型之间取得了很好的一致性。相反，在纳秒级的导线爆炸中，为了适应实验数据，修改了导线电阻和EOS。在圆柱和球形线阵列的实验中，证明了会聚冲击波（SW）的产生，从而可以在SW内爆的轴或原点附近形成极端的水状态。另外，已经表明，与球形内爆的情况相比，超球形几何形状的SW收敛使人们能够在收敛轴附近获得更大的水压，密度和温度值。实验和数值分析结果表明，圆柱SW沿其收敛的主要路径保持对称。此外，还显示出X捏线构造和圆锥线阵列的水下电爆炸可以使人们分别产生快速的金属和水喷射，而无需使用化学爆炸。

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