中国物理B ›› 2016, Vol. 25 ›› Issue (9): 95205-095205.doi: 10.1088/1674-1056/25/9/095205

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

Influence of air pressure on the performance of plasma synthetic jet actuator

Yang Li(李洋), Min Jia(贾敏), Yun Wu(吴云), Ying-hong Li(李应红), Hao-hua Zong(宗豪华), Hui-min Song(宋慧敏), Hua Liang(梁华)   

  1. 1. Air Force Engineering University, Xi'an 710038, China;
    2. Xi'an Jiaotong University, Xi'an 710049, China
  • 收稿日期:2015-09-29 修回日期:2016-04-14 出版日期:2016-09-05 发布日期:2016-09-05
  • 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. 51407197, 51522606, 51336011, 91541120, and 11472306).

Influence of air pressure on the performance of plasma synthetic jet actuator

Yang Li(李洋)1, Min Jia(贾敏)1, Yun Wu(吴云)2, Ying-hong Li(李应红)1, Hao-hua Zong(宗豪华)2, Hui-min Song(宋慧敏)1, Hua Liang(梁华)1   

  1. 1. Air Force Engineering University, Xi'an 710038, China;
    2. Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2015-09-29 Revised:2016-04-14 Online:2016-09-05 Published:2016-09-05
  • Contact: Yun Wu E-mail:wuyun1223@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51407197, 51522606, 51336011, 91541120, and 11472306).

摘要: Plasma synthetic jet actuator (PSJA) has a wide application prospect in the high-speed flow control field for its high jet velocity. In this paper, the influence of the air pressure on the performance of a two-electrode PSJA is investigated by the schlieren method in a large range from 7 kPa to 100 kPa. The energy consumed by the PSJA is roughly the same for all the pressure levels. Traces of the precursor shock wave velocity and the jet front velocity vary a lot for different pressures. The precursor shock wave velocity first decreases gradually and then remains at 345 m/s as the air pressure increases. The peak jet front velocity always appears at the first appearance of a jet, and it decreases gradually with the increase of the air pressure. A maximum precursor shock wave velocity of 520 m/s and a maximum jet front velocity of 440 m/s are observed at the pressure of 7 kPa. The averaged jet velocity in one period ranges from 44 m/s to 54 m/s for all air pressures, and it drops with the rising of the air pressure. High velocities of the precursor shock wave and the jet front indicate that this type of PSJA can still be used to influence the high-speed flow field at 7 kPa.

关键词: plasma synthetic jet actuator, air pressure, performance, schlieren method

Abstract: Plasma synthetic jet actuator (PSJA) has a wide application prospect in the high-speed flow control field for its high jet velocity. In this paper, the influence of the air pressure on the performance of a two-electrode PSJA is investigated by the schlieren method in a large range from 7 kPa to 100 kPa. The energy consumed by the PSJA is roughly the same for all the pressure levels. Traces of the precursor shock wave velocity and the jet front velocity vary a lot for different pressures. The precursor shock wave velocity first decreases gradually and then remains at 345 m/s as the air pressure increases. The peak jet front velocity always appears at the first appearance of a jet, and it decreases gradually with the increase of the air pressure. A maximum precursor shock wave velocity of 520 m/s and a maximum jet front velocity of 440 m/s are observed at the pressure of 7 kPa. The averaged jet velocity in one period ranges from 44 m/s to 54 m/s for all air pressures, and it drops with the rising of the air pressure. High velocities of the precursor shock wave and the jet front indicate that this type of PSJA can still be used to influence the high-speed flow field at 7 kPa.

Key words: plasma synthetic jet actuator, air pressure, performance, schlieren method

中图分类号:  (Plasma sources)

  • 52.50.Dg
52.80.Mg (Arcs; sparks; lightning; atmospheric electricity) 52.80.Vp (Discharge in vacuum) 47.80.Jk (Flow visualization and imaging)