中国物理B ›› 2020, Vol. 29 ›› Issue (6): 64703-064703.doi: 10.1088/1674-1056/ab8372

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Forebody asymmetric vortex control with extended dielectric barrier discharge plasma actuators

Borui Zheng(郑博睿), Ming Xue(薛明), Chang Ge(葛畅)   

  1. 1 School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China;
    2 School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
  • 收稿日期:2020-01-27 修回日期:2020-02-27 出版日期:2020-06-05 发布日期:2020-06-05
  • 通讯作者: Borui Zheng E-mail:narcker@xaut.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51607188 and 61971345), the Foundation for Key Laboratories of National Defense Science and Technology, China (Grant No. 614220202011801), the Natural Science Basic Research Program of Shaanxi Province of China (Grant No. 2019JM-393), and Xi'an Municipal Science and Technology Project of China (Grant No. 201805037YD15CG21(28)).

Forebody asymmetric vortex control with extended dielectric barrier discharge plasma actuators

Borui Zheng(郑博睿)1, Ming Xue(薛明)2, Chang Ge(葛畅)1   

  1. 1 School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China;
    2 School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2020-01-27 Revised:2020-02-27 Online:2020-06-05 Published:2020-06-05
  • Contact: Borui Zheng E-mail:narcker@xaut.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51607188 and 61971345), the Foundation for Key Laboratories of National Defense Science and Technology, China (Grant No. 614220202011801), the Natural Science Basic Research Program of Shaanxi Province of China (Grant No. 2019JM-393), and Xi'an Municipal Science and Technology Project of China (Grant No. 201805037YD15CG21(28)).

摘要: Plasma control of forebody asymmetric vortices is mostly achieved by means of dielectric barrier discharge (DBD) plasma actuators. However, DBD actuators suffer from some disadvantages such as a weak induced body force, a single-direction induced jet, and an unclear control mechanism. We carry out wind tunnel experiments involving the forebody vortex control of a slender body at high angles of attack using an innovative extended DBD actuator, which has a stronger capacity to induce an electric wind than a DBD actuator. Through synchronous measurements of the pressure distribution and particle image velocimetry (PIV), the spatiotemporal evolution of the dynamic interactions between plasma-actuation-induced vortices and forebody asymmetric vortices is analyzed. The influence of plasma discharge on the boundary layer separation around a slender body and the spatial topological structures of asymmetric vortices are further surveyed, as the optimized actuation parameters. Extended DBD actuators are found to be more capable of controlling asymmetric vortices than DBD actuators, and a linear proportionality of the sectional lateral force versus the duty ratio is achieved. There exists an optimal normalized reduced frequency (f+=2πfpd/U=2.39) for asymmetric vortex control under the present experimental conditions. The research results can provide technical guidance for the control and reuse of forebody asymmetric vortices.

关键词: plasma flow control, dielectric barrier discharge, forebody asymmetric vortex

Abstract: Plasma control of forebody asymmetric vortices is mostly achieved by means of dielectric barrier discharge (DBD) plasma actuators. However, DBD actuators suffer from some disadvantages such as a weak induced body force, a single-direction induced jet, and an unclear control mechanism. We carry out wind tunnel experiments involving the forebody vortex control of a slender body at high angles of attack using an innovative extended DBD actuator, which has a stronger capacity to induce an electric wind than a DBD actuator. Through synchronous measurements of the pressure distribution and particle image velocimetry (PIV), the spatiotemporal evolution of the dynamic interactions between plasma-actuation-induced vortices and forebody asymmetric vortices is analyzed. The influence of plasma discharge on the boundary layer separation around a slender body and the spatial topological structures of asymmetric vortices are further surveyed, as the optimized actuation parameters. Extended DBD actuators are found to be more capable of controlling asymmetric vortices than DBD actuators, and a linear proportionality of the sectional lateral force versus the duty ratio is achieved. There exists an optimal normalized reduced frequency (f+=2πfpd/U=2.39) for asymmetric vortex control under the present experimental conditions. The research results can provide technical guidance for the control and reuse of forebody asymmetric vortices.

Key words: plasma flow control, dielectric barrier discharge, forebody asymmetric vortex

中图分类号:  (Separated flows)

  • 47.32.Ff
47.85.Gj (Aerodynamics) 52.80.-s (Electric discharges)