TY - GEN
T1 - Influence of voltage polarity on intensity of shock waves induced by underwater pulse discharges
AU - Zhou, Gu Yue
AU - Liu, Yi
AU - Li, Xian Dong
AU - Liu, Si Wei
AU - Li, Zhi Yuan
AU - Li, Zi Jian
AU - Lin, Fu Chang
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/11/29
Y1 - 2017/11/29
N2 - The shock wave generated by high-voltage pulse discharges in liquid has been widely used in industrial applications. In this paper, an integrated experimental platform of underwater pulse discharges is established, a needle-plate electrodes system with the gap distance of 10 mm is used. The influence of voltage polarity on the process, morphology and physical characteristics of streamer development are discussed, based on the analysis of energy transfer process, the influence of voltage polarity on the shock intensity is studied. The results show that for the subsonic streamer, the use of negative polarity voltage can significantly improve the energy conversion efficiency of the shock wave. For the positive polarity, the supersonic streamer mode can significantly reduce the energy loss of the prebreakdown process, increase the rate of expansion of the plasma channel, and obtain a higher intensity of shock wave. Using the negative polarity voltage, or controlling the voltage of the positive polarity to make streamers develop in the supersonic streamer mode, can significantly improve the intensity of the shock wave.
AB - The shock wave generated by high-voltage pulse discharges in liquid has been widely used in industrial applications. In this paper, an integrated experimental platform of underwater pulse discharges is established, a needle-plate electrodes system with the gap distance of 10 mm is used. The influence of voltage polarity on the process, morphology and physical characteristics of streamer development are discussed, based on the analysis of energy transfer process, the influence of voltage polarity on the shock intensity is studied. The results show that for the subsonic streamer, the use of negative polarity voltage can significantly improve the energy conversion efficiency of the shock wave. For the positive polarity, the supersonic streamer mode can significantly reduce the energy loss of the prebreakdown process, increase the rate of expansion of the plasma channel, and obtain a higher intensity of shock wave. Using the negative polarity voltage, or controlling the voltage of the positive polarity to make streamers develop in the supersonic streamer mode, can significantly improve the intensity of the shock wave.
KW - Energy transfer
KW - Polarity effect
KW - Shock wave intensity
KW - Streamer development
KW - Underwater discharges
UR - http://www.scopus.com/inward/record.url?scp=85043452670&partnerID=8YFLogxK
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U2 - 10.1109/ICDL.2017.8124692
DO - 10.1109/ICDL.2017.8124692
M3 - Conference contribution
AN - SCOPUS:85043452670
T3 - 2017 IEEE 19th International Conference on Dielectric Liquids, ICDL 2017
SP - 1
EP - 5
BT - 2017 IEEE 19th International Conference on Dielectric Liquids, ICDL 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 19th IEEE International Conference on Dielectric Liquids, ICDL 2017
Y2 - 25 June 2017 through 29 June 2017
ER -