不同丝径与放电周期对铜丝电爆炸的影响分析

Influence of Different Wire Diameter and Discharge Period on Copper Wire Electrical Explosion

摘要: 通过数值模拟对真空中的铜丝电爆炸过程进行了研究，重点考察了丝径和放电周期对铜丝电爆炸过程的影响。模拟结果表明，采用细金属丝（直径0.3mm）比粗丝（直径3mm）具有更高的电爆炸能量利用效率，细丝的能量利用率可达80%以上，而粗丝小于10%。此外，细丝电爆炸的效果几乎不受放电快慢的影响，而对于粗丝来说，缩短放电周期可将能量利用效率提升2倍左右，但电爆炸的空间均匀性会随之变差。
- 电爆炸 /
- 磁流体力学 /
- 金属丝 /
- 放电周期
Abstract: Wire electrical explosion has important applications in the fields of Z-pinch, nano powder preparation and special processing. In this paper, the electrical explosion process of copper wire in vacuum was studied by numerical simulation, and the effects of wire diameter and discharge period on the electrical explosion process of copper wire were investigated. The simulation results show that the use of fine wire has higher energy efficiency than that of thick wire. In addition, the effect of electric explosion of filament is hardly affected by the speed of discharge. When the wire diameter increases, the faster the discharge, the worse the spatial uniformity of electric explosion, but on the other hand, it can also improve the energy utilization efficiency of electric explosion.
- electric explosion /
- magnetohydrodynamics /
- wire /
- discharge cycle