中国物理B ›› 2017, Vol. 26 ›› Issue (6): 65204-065204.doi: 10.1088/1674-1056/26/6/065204

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Modeling and optimization of the multichannel spark discharge

Zhi-Bo Zhang(张志波), Yun Wu(吴云), Min Jia(贾敏), Hui-Min Song(宋慧敏), Zheng-Zhong Sun(孙正中), Ying-Hong Li(李应红)   

  1. 1 Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi'an 710038, China;
    2 Science and Technology on Plasma Dynamics Laboratory, Xi'an Jiaotong University, Xi'an 710049, China;
    3 Department of Mechanical Engineering and Aeronautics, City University London, London, United Kingdom
  • 收稿日期:2016-12-13 修回日期:2017-02-19 出版日期:2017-06-05 发布日期:2017-06-05
  • 通讯作者: Yun Wu E-mail:wuyun1223@126.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51336011, 51522606, 91541120, 51611130198, 51407197, and 11472306) and Royal Society (Grant No. IE150612).

Modeling and optimization of the multichannel spark discharge

Zhi-Bo Zhang(张志波)1, Yun Wu(吴云)1,2, Min Jia(贾敏)1, Hui-Min Song(宋慧敏)1, Zheng-Zhong Sun(孙正中)3, Ying-Hong Li(李应红)1   

  1. 1 Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi'an 710038, China;
    2 Science and Technology on Plasma Dynamics Laboratory, Xi'an Jiaotong University, Xi'an 710049, China;
    3 Department of Mechanical Engineering and Aeronautics, City University London, London, United Kingdom
  • Received:2016-12-13 Revised:2017-02-19 Online:2017-06-05 Published:2017-06-05
  • Contact: Yun Wu E-mail:wuyun1223@126.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51336011, 51522606, 91541120, 51611130198, 51407197, and 11472306) and Royal Society (Grant No. IE150612).

摘要:

This paper reports a novel analytic model of this multichannel spark discharge, considering the delay time in the breakdown process, the electric transforming of the discharge channel from a capacitor to a resistor induced by the air breakdown, and the varying plasma resistance in the discharge process. The good agreement between the experimental and the simulated results validated the accuracy of this model. Based on this model, the influence of the circuit parameters on the maximum discharge channel number (MDCN) is investigated. Both the input voltage amplitude and the breakdown voltage threshold of each discharge channel play a critical role. With the increase of the input voltage and the decrease of the breakdown voltage, the MCDN increases almost linearly. With the increase of the discharge capacitance, the MDCN first rises and then remains almost constant. With the increase of the circuit inductance, the MDCN increases slowly but decreases quickly when the inductance increases over a certain value. There is an optimal value of the capacitor connected to the discharge channel corresponding to the MDCN. Finally, based on these results, to shorten the discharge time, a modified multichannel discharge circuit is developed and validated by the experiment. With only 6-kV input voltage, 31-channels discharge is achieved. The breakdown voltage of each electrode gap is larger than 3 kV. The modified discharge circuit is certain to be widely used in the PSJA flow control field.

关键词: multichannel discharge circuit, circuit model, PSJA array, plasma flow control

Abstract:

This paper reports a novel analytic model of this multichannel spark discharge, considering the delay time in the breakdown process, the electric transforming of the discharge channel from a capacitor to a resistor induced by the air breakdown, and the varying plasma resistance in the discharge process. The good agreement between the experimental and the simulated results validated the accuracy of this model. Based on this model, the influence of the circuit parameters on the maximum discharge channel number (MDCN) is investigated. Both the input voltage amplitude and the breakdown voltage threshold of each discharge channel play a critical role. With the increase of the input voltage and the decrease of the breakdown voltage, the MCDN increases almost linearly. With the increase of the discharge capacitance, the MDCN first rises and then remains almost constant. With the increase of the circuit inductance, the MDCN increases slowly but decreases quickly when the inductance increases over a certain value. There is an optimal value of the capacitor connected to the discharge channel corresponding to the MDCN. Finally, based on these results, to shorten the discharge time, a modified multichannel discharge circuit is developed and validated by the experiment. With only 6-kV input voltage, 31-channels discharge is achieved. The breakdown voltage of each electrode gap is larger than 3 kV. The modified discharge circuit is certain to be widely used in the PSJA flow control field.

Key words: multichannel discharge circuit, circuit model, PSJA array, plasma flow control

中图分类号:  (Plasma sources)

  • 52.50.Dg
52.30.-q (Plasma dynamics and flow) 52.80.Mg (Arcs; sparks; lightning; atmospheric electricity) 47.85.L- (Flow control)