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Based on the Drift Step Recovery Diode (DSRD), a fully solid-state high-repetition-frequency nanosecond fast pulse source with a pulse front of ~ 2ns and a repetition frequency of tens of kHz is developed. Using this pulse source, the experimental research on the plasma excitation characteristics of high-repetition-rate nanosecond-dielectric barrier discharge (NS-DBD) was carried out. The characteristics of the induced velocity field by nanosecond fast pulses indicate that the maximum induced flow field velocity is 1.07m/s at a repetition rate of 30kHz, and the discharge-induced flow pattern is closely related to the repetition rate. The intensity of the shock wave induced by the nanosecond fast pulse increases with the increase of the repetition frequency, and the density is proportional to the repetition frequency. The effect of high repetition rate nanosecond fast pulse DBD-excited plasma in suppressing boundary layer separation and plasma deicing has been verified.

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Induced Flow Characteristics and Applications of Plasma Actuation Based on High-Repetition-Rate Fast-Front NS-DBD

  • 会议论文

  • 发表日期：

    2025年

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  • Xu Fang,
  • Huimin Song,
  • Zhi Su,
  • Hanqing Qiao,
  • Jialing Xie,
  • Tuopu Qu,
  • Jingxuan An

摘要

Based on the Drift Step Recovery Diode (DSRD), a fully solid-state high-repetition-frequency nanosecond fast pulse source with a pulse front of ~ 2ns and a repetition frequency of tens of kHz is developed. Using this pulse source, the experimental research on the plasma excitation characteristics of high-repetition-rate nanosecond-dielectric barrier discharge (NS-DBD) was carried out. The characteristics of the induced velocity field by nanosecond fast pulses indicate that the maximum induced flow field velocity is 1.07m/s at a repetition rate of 30kHz, and the discharge-induced flow pattern is closely related to the repetition rate. The intensity of the shock wave induced by the nanosecond fast pulse increases with the increase of the repetition frequency, and the density is proportional to the repetition frequency. The effect of high repetition rate nanosecond fast pulse DBD-excited plasma in suppressing boundary layer separation and plasma deicing has been verified.