中国物理B ›› 2018, Vol. 27 ›› Issue (2): 25208-025208.doi: 10.1088/1674-1056/27/2/025208

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

Effect of actuating frequency on plasma assisted detonation initiation

Si-Yin Zhou(周思引), Xue-Ke Che(车学科), Di Wang(王迪), Wan-Sheng Nie(聂万胜)   

  1. 1. Space Engineering University, Beijing 101416, China;
    2. Science and Technology on Scramjet Laboratory, Changsha 410073, China
  • 收稿日期:2017-08-31 修回日期:2017-11-13 出版日期:2018-02-05 发布日期:2018-02-05
  • 通讯作者: Wan-Sheng Nie E-mail:nws1969@126.com
  • 基金资助:
    Project supported by the Open Project of Science and Technology on Scramjet Laboratory, China (Grant No. CG-2014-05-118) and the National Natural Science Foundation of China (Grant No. 91441123).

Effect of actuating frequency on plasma assisted detonation initiation

Si-Yin Zhou(周思引)1, Xue-Ke Che(车学科)1,2, Di Wang(王迪)1, Wan-Sheng Nie(聂万胜)1   

  1. 1. Space Engineering University, Beijing 101416, China;
    2. Science and Technology on Scramjet Laboratory, Changsha 410073, China
  • Received:2017-08-31 Revised:2017-11-13 Online:2018-02-05 Published:2018-02-05
  • Contact: Wan-Sheng Nie E-mail:nws1969@126.com
  • About author:52.77.-j; 52.80.-s; 52.65.-y; 47.40.Rs
  • Supported by:
    Project supported by the Open Project of Science and Technology on Scramjet Laboratory, China (Grant No. CG-2014-05-118) and the National Natural Science Foundation of China (Grant No. 91441123).

摘要: Aiming at studying the influence of actuating frequency on plasma assisted detonation initiation by alternating current dielectric barrier discharge, a loosely coupled method is used to simulate the detonation initiation process of a hydrogen-oxygen mixture in a detonation tube at different actuating frequencies. Both the discharge products and the detonation forming process which is assisted by the plasma are analyzed. It is found that the patterns of the temporal and spatial distributions of discharge products in one cycle are not changed by the actuating frequency. However, the concentration of every species decreases as the actuating frequency rises, and atom O is the most sensitive to this variation, which is related to the decrease of discharge power. With respect to the reaction flow of the detonation tube, the deflagration-to-detonation transition (DDT) time and distance both increase as the actuating frequency rises, but the degree of effect on DDT development during flow field evolution is erratic. Generally, the actuating frequency affects none of the amplitude value of the pressure, temperature, species concentration of the flow field, and the combustion degree within the reaction zone.

关键词: alternating current dielectric barrier discharge, plasma assisted detonation initiation, actuating frequency, deflagration to detonation, active particles

Abstract: Aiming at studying the influence of actuating frequency on plasma assisted detonation initiation by alternating current dielectric barrier discharge, a loosely coupled method is used to simulate the detonation initiation process of a hydrogen-oxygen mixture in a detonation tube at different actuating frequencies. Both the discharge products and the detonation forming process which is assisted by the plasma are analyzed. It is found that the patterns of the temporal and spatial distributions of discharge products in one cycle are not changed by the actuating frequency. However, the concentration of every species decreases as the actuating frequency rises, and atom O is the most sensitive to this variation, which is related to the decrease of discharge power. With respect to the reaction flow of the detonation tube, the deflagration-to-detonation transition (DDT) time and distance both increase as the actuating frequency rises, but the degree of effect on DDT development during flow field evolution is erratic. Generally, the actuating frequency affects none of the amplitude value of the pressure, temperature, species concentration of the flow field, and the combustion degree within the reaction zone.

Key words: alternating current dielectric barrier discharge, plasma assisted detonation initiation, actuating frequency, deflagration to detonation, active particles

中图分类号:  (Plasma applications)

  • 52.77.-j
52.80.-s (Electric discharges) 52.65.-y (Plasma simulation) 47.40.Rs (Detonation waves)