中国物理B ›› 2017, Vol. 26 ›› Issue (1): 15205-015205.doi: 10.1088/1674-1056/26/1/015205

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

Thermal and induced flow characteristics of radio frequency surface dielectric barrier discharge plasma actuation at atmospheric pressure

Wei-long Wang(王蔚龙), Jun Li(李军), Hui-min Song(宋慧敏), Di Jin(金迪), Min Jia(贾敏), Yun Wu(吴云)   

  1. Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi'an 710038, China
  • 收稿日期:2016-07-09 修回日期:2016-09-21 出版日期:2017-01-05 发布日期:2017-01-05
  • 通讯作者: Hui-min Song E-mail:min_cargi@sina.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11472306, 51407197, and 51507187).

Thermal and induced flow characteristics of radio frequency surface dielectric barrier discharge plasma actuation at atmospheric pressure

Wei-long Wang(王蔚龙), Jun Li(李军), Hui-min Song(宋慧敏), Di Jin(金迪), Min Jia(贾敏), Yun Wu(吴云)   

  1. Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi'an 710038, China
  • Received:2016-07-09 Revised:2016-09-21 Online:2017-01-05 Published:2017-01-05
  • Contact: Hui-min Song E-mail:min_cargi@sina.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11472306, 51407197, and 51507187).

摘要: Thermal and induced flow velocity characteristics of radio frequency (RF) surface dielectric barrier discharge (SDBD) plasma actuation are experimentally investigated in this paper. The spatial and temporal distributions of the dielectric surface temperature are measured with the infrared thermography at atmospheric pressure. In the spanwise direction, the highest dielectric surface temperature is acquired at the center of the high voltage electrode, while it reduces gradually along the chordwise direction. The maximum temperature of the dielectric surface raises rapidly once discharge begins. After several seconds (typically 100 s), the temperature reaches equilibrium among the actuator's surface, plasma, and surrounding air. The maximum dielectric surface temperature is higher than that powered by an AC power supply in dozens of kHz. Influences of the duty cycle and the input frequency on the thermal characteristics are analyzed. When the duty cycle increases, the maximum dielectric surface temperature increases linearly. However, the maximum dielectric surface temperature increases nonlinearly when the input frequency varies from 0.47 MHz to 1.61 MHz. The induced flow velocity of the RF SDBD actuator is 0.25 m/s.

关键词: radio frequency discharge, temperature distribution, induced flow velocity, plasma aerodynamic actuation

Abstract: Thermal and induced flow velocity characteristics of radio frequency (RF) surface dielectric barrier discharge (SDBD) plasma actuation are experimentally investigated in this paper. The spatial and temporal distributions of the dielectric surface temperature are measured with the infrared thermography at atmospheric pressure. In the spanwise direction, the highest dielectric surface temperature is acquired at the center of the high voltage electrode, while it reduces gradually along the chordwise direction. The maximum temperature of the dielectric surface raises rapidly once discharge begins. After several seconds (typically 100 s), the temperature reaches equilibrium among the actuator's surface, plasma, and surrounding air. The maximum dielectric surface temperature is higher than that powered by an AC power supply in dozens of kHz. Influences of the duty cycle and the input frequency on the thermal characteristics are analyzed. When the duty cycle increases, the maximum dielectric surface temperature increases linearly. However, the maximum dielectric surface temperature increases nonlinearly when the input frequency varies from 0.47 MHz to 1.61 MHz. The induced flow velocity of the RF SDBD actuator is 0.25 m/s.

Key words: radio frequency discharge, temperature distribution, induced flow velocity, plasma aerodynamic actuation

中图分类号:  (Plasma heating by radio-frequency fields; ICR, ICP, helicons)

  • 52.50.Qt
52.80.Mg (Arcs; sparks; lightning; atmospheric electricity) 47.80.Jk (Flow visualization and imaging)