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| Analysis on the Development Process of Arc Channel for Underwater High Current Pulsed Discharge |
| Liu Yi1,2, Zhao Yong1, Ren Yijia1, Lin Fuchang1,2, Li Hua1,2 |
1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China;
2. Key Laboratory of Pulsed Power Technology Ministry of Education Huazhong University of Science and Technology Wuhan 430074 China |
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Abstract There are two problems in solving the arc channel injection energy with the help of the bragenskii impedance model. The first problem is that the process of solving the discharge coefficient related to the experimental setup is complicated, and the second problem is that the solution results are difficult to accurately reflect the channel development characteristics. Therefore, an analysis method of arc channel development process of underwater high current pulsed discharge based on arc channel voltage and current is proposed. The “piston” model was used to describe the rapid expansion process of the channel and the mechanism of shock wave generation. Based on the measured voltage and current of arc channel, removing the inductance component, a method to calculate the injected channel energy was proposed. The energy balance equation was used to model and analyze the channel development process. Compared with the solution results based on the Braginskii impedance model, the method proposed in this paper can more accurately describe the accelerated expansion characteristics of the arc channel, and can provide a basis for in-depth exploration of the development mechanism of the arc channel.
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Received: 25 May 2020
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2021, Vol. 36 
