Underwater electrical wire explosion: Shock wave from melting being overtaken by shock wave from vaporization

作者：Li, Liuxia; Qian, Dun; Zou, Xiaobing; Wang, Xinxin^*

来源：Physics of Plasmas, 2018, 25(5): 053502.

DOI：10.1063/1.5028507

• PRESSURE

The shock waves generated by an underwater electrical wire explosion were investigated. A microsecond time-scale pulsed current source was used to trigger the electrical explosion of copper wires with a length of 5 cm and a diameter of 200 mu m. The energy-storage capacitor was charged to a relatively low energy so that the energy deposited onto the wire was not large enough to fully vaporize the whole wire. Two shock waves were recorded with a piezoelectric gauge that was located at a position of 100 mm from the exploding wire. The first and weak shock wave was confirmed to be the contribution from wire melting, while the second and stronger shock wave was the contribution from wire vaporization. The phenomenon whereby the first shock wave generated by melting being overtaken by the shock wave due to vaporization was observed. Published by AIP Publishing.

• 出版日期2018-5
• 单位清华大学