Experimental study on nanosecond pulsed pin-to-plate discharge in supersonic air flow

Yiwen LI (李益文); Zhong ZHUANG (庄重); Lei PANG (庞磊); Pengzhen DUAN (段朋振); Zhiwen DING (丁志文); Bailing ZHANG (张百灵)

doi:10.1088/2058-6272/ab01f5

Plasma Science and Technology > 2019 > 21(6): 65502-065502. > DOI: 10.1088/2058-6272/ab01f5

Yiwen LI (李益文), Zhong ZHUANG (庄重), Lei PANG (庞磊), Pengzhen DUAN (段朋振), Zhiwen DING (丁志文), Bailing ZHANG (张百灵). Experimental study on nanosecond pulsed pin-to-plate discharge in supersonic air flow[J]. Plasma Science and Technology, 2019, 21(6): 65502-065502. DOI: 10.1088/2058-6272/ab01f5

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Experimental study on nanosecond pulsed pin-to-plate discharge in supersonic air flow

¹ Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, People’s Republic of China
² Science and Technology on Combustion, Internal Flow and Thermo-Structure Laboratory, Astronautics School, Northwestern Polytechnical University, Xi’an 710072, People’s Republic of China
³ State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China

Funds: This work is supported by National Natural Science Foundation of China (Nos. 11372352, 51776222) and the China Postdoctoral Science Foundation (Nos. 2017T100772, 2016M590972).

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Received Date: August 15, 2018

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Abstract

Development of magnetohydrodynamic acceleration technology is expected to improve wind tunnel simulation capability and testing capability. The underlying premise is to produce uniform and stable plasma in supersonic air flow, and gas discharge is an effective way to achieve this. A nanosecond pulsed discharge experimental system under supersonic conditions was established, and a pin-to-plate nanosecond pulsed discharge experiment in Mach 2 air flow was performed to verify that the proposed method produced uniform and stable plasma under supersonic conditions. The results show that the discharge under supersonic conditions was stable overall, but uniformity was not as good as that under static conditions. Increasing the number of pins improved discharge uniformity, but reduced discharge intensity and hence plasma density. Under multi-pin conditions at 1000 Hz, the discharge was almost completely corona discharge, with the main current component being the displacement current, which was smaller than that under static conditions.
- nanosecond pulse discharge,
- supersonic air flow,
- pin-to-plate discharge,
- plasma,
- uniform and stable

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References

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Experimental study on nanosecond pulsed pin-to-plate discharge in supersonic air flow