New analytical solution of the piston and shock evolution for the wire electrical explosion in water is obtained. This is provided on the base of the compressible Euler equations without usually a prior introduction of any self-similarity hypothesis. It is shown that diverging cylindrical shock is transformed into acoustic wave in a finite time, even without taking into account of dissipation. The correspondence with experimental data on underwater electrical explosion of thin wire is represented.

钢丝绳活塞和冲击演化的新解析解 在水中实现了电爆炸。这是基于 可压缩欧拉方程，通常不需要事先引入任何 自相似假说。结果表明，发散的柱面激波是 在有限的时间内转化为声波，即使不考虑 关于消散的叙述。与水下试验数据的对应关系 描述了细丝的电爆炸。