TY - GEN
T1 - Early Stage of Bubble Dynamics via Electrical Explosion in Water
AU - Cao, Yuchen
AU - Han, Ruoyu
AU - Li, Chen
AU - Yuan, Wei
AU - Liu, Rui
N1 - Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2022
Y1 - 2022
N2 - Underwater discharge is an indispensable method to simulate underwater explosions, and it has received more and more attention in recent years. In this paper, the electrical explosion (a kind of pulsed discharge) of copper/aluminum wires connected in parallel in water was used as the research object. Electrical parameter diagnostics in combination with high-speed shadow photography were adopted to study the spatiotemporal evolution behavior of explosion products (plasma) bubbles. Experiment results indicated that after the electric explosion (phase explosion) occurred, the shock wave and ionization process proceed successively. Then the high-impedance warm dense matter promotes the energy deposition and expansion of the explosion products. After the discharge finished, the ionized metallic gas continued glowing for a period of time. time. It was also observed that clusters of protrusions on the explosion product-water interface, which might be related to local explosions/discharges. The copper wire explosion product interface was smooth and explicit, while the aluminum wire had a flocculent boundary layer. In addition, the Richmyer-Meshkov instability caused by the shock wave between the metal double wires was not obvious.
AB - Underwater discharge is an indispensable method to simulate underwater explosions, and it has received more and more attention in recent years. In this paper, the electrical explosion (a kind of pulsed discharge) of copper/aluminum wires connected in parallel in water was used as the research object. Electrical parameter diagnostics in combination with high-speed shadow photography were adopted to study the spatiotemporal evolution behavior of explosion products (plasma) bubbles. Experiment results indicated that after the electric explosion (phase explosion) occurred, the shock wave and ionization process proceed successively. Then the high-impedance warm dense matter promotes the energy deposition and expansion of the explosion products. After the discharge finished, the ionized metallic gas continued glowing for a period of time. time. It was also observed that clusters of protrusions on the explosion product-water interface, which might be related to local explosions/discharges. The copper wire explosion product interface was smooth and explicit, while the aluminum wire had a flocculent boundary layer. In addition, the Richmyer-Meshkov instability caused by the shock wave between the metal double wires was not obvious.
KW - Electrical explosion of wire
KW - Explosion and shock
KW - High-voltage pulsed discharge
KW - Underwater discharge
KW - Underwater explosion simulation
UR - http://www.scopus.com/inward/record.url?scp=85128895860&partnerID=8YFLogxK
U2 - 10.1007/978-981-19-1870-4_112
DO - 10.1007/978-981-19-1870-4_112
M3 - Conference contribution
AN - SCOPUS:85128895860
SN - 9789811918698
T3 - Lecture Notes in Electrical Engineering
SP - 1067
EP - 1074
BT - The proceedings of the 16th Annual Conference of China Electrotechnical Society - Volume II
A2 - Liang, Xidong
A2 - Li, Yaohua
A2 - He, Jinghan
A2 - Yang, Qingxin
PB - Springer Science and Business Media Deutschland GmbH
T2 - 16th Annual Conference of China Electrotechnical Society, ACCES 2021
Y2 - 24 September 2021 through 26 September 2021
ER -