1. Current distribution at underwater electrical explosion of wires with different diameter connected in parallel.
- Author
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Yin, Guofeng, Shi, Huantong, Li, Tuan, Hu, Yujia, Wu, Guangning, Li, Xingwen, and Wu, Jian
- Subjects
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CURRENT distribution , *UNDERWATER explosions , *WIRE , *SHOCK waves , *DIAMETER , *ELECTRIC inductance - Abstract
Underwater electrical wire explosion is usually used as a source of underwater shock waves, and the generated shock wave intensity can be regulated by adopting a wire array. In this paper, the dynamics of the electrical explosion of two wires with different diameters connected in parallel were studied. The current flowing through each wire was measured to study the current distribution, and the self-emission image and laser backlight shadow image was obtained to observe the evolution of the wires. A numerical model was built to make explanations and predictions. The results showed that due to the presence of wire inductance and contact resistance between the wire and electrode, the wires are with different current densities and undergo asynchronous heating from the beginning of the discharge. Furthermore, the variation of current distribution among the wires was divided into six stages according to the moment the wire melted and exploded, and analyzed stage by stage. The unbalanced energy deposition results in obvious differences in thermal dynamic parameters, which explains the gradual "extinguishment" of the thinner wire in the self-emission image. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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