中国物理B ›› 2017, Vol. 26 ›› Issue (6): 65206-065206.doi: 10.1088/1674-1056/26/6/065206

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

Numerical study on the discharge characteristics and nonlinear behaviors of atmospheric pressure coaxial electrode dielectric barrier discharges

Ding-Zong Zhang(张定宗), Yan-Hui Wang(王艳辉), De-Zhen Wang(王德真)   

  1. 1 School of Physics and Electronic Engineering, Hengyang Normal University, Hengyang 421008, China;
    2 School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
  • 收稿日期:2016-12-29 修回日期:2017-03-22 出版日期:2017-06-05 发布日期:2017-06-05
  • 通讯作者: Ding-Zong Zhang, Yan-Hui Wang E-mail:Zhangdingzong2006@163.com;wangyh@dlut.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11447244 and 11405208), the Science Foundation of Hengyang Normal University, China (Grant No. 14B41), and the Hunan Provincial Applied Basic Research Base of Optoelectronic Information Technology, China (Grant No. GDXX010).

Numerical study on the discharge characteristics and nonlinear behaviors of atmospheric pressure coaxial electrode dielectric barrier discharges

Ding-Zong Zhang(张定宗)1, Yan-Hui Wang(王艳辉)2, De-Zhen Wang(王德真)2   

  1. 1 School of Physics and Electronic Engineering, Hengyang Normal University, Hengyang 421008, China;
    2 School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
  • Received:2016-12-29 Revised:2017-03-22 Online:2017-06-05 Published:2017-06-05
  • Contact: Ding-Zong Zhang, Yan-Hui Wang E-mail:Zhangdingzong2006@163.com;wangyh@dlut.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11447244 and 11405208), the Science Foundation of Hengyang Normal University, China (Grant No. 14B41), and the Hunan Provincial Applied Basic Research Base of Optoelectronic Information Technology, China (Grant No. GDXX010).

摘要: The discharge characteristics and temporal nonlinear behaviors of the atmospheric pressure coaxial electrode dielectric barrier discharges are studied by using a one-dimensional fluid model. It is shown that the discharge is always asymmetrical between the positive pulses and negative pulses. The gas gap severely affects this asymmetry. But it is hard to acquire a symmetrical discharge by changing the gas gap. This asymmetry is proportional to the asymmetric extent of electrode structure, namely the ratio of the outer electrode radius to the inner electrode radius. When this ratio is close to unity, a symmetrical discharge can be obtained. With the increase of frequency, the discharge can exhibit a series of nonlinear behaviors such as period-doubling bifurcation, secondary bifurcation and chaotic phenomena. In the period-doubling bifurcation sequence the period-n discharge becomes more and more unstable with the increase of n. The period-doubling bifurcation can also be obtained by altering the discharge gas gap. The mechanisms of two bifurcations are further studied. It is found that the residual quasineutral plasma from the previous discharges and corresponding electric field distribution can weaken the subsequent discharge, and leads to the occurrence of bifurcation.

关键词: atmospheric dielectric-barrier discharge, numerical simulation, nonlinear behaviors

Abstract: The discharge characteristics and temporal nonlinear behaviors of the atmospheric pressure coaxial electrode dielectric barrier discharges are studied by using a one-dimensional fluid model. It is shown that the discharge is always asymmetrical between the positive pulses and negative pulses. The gas gap severely affects this asymmetry. But it is hard to acquire a symmetrical discharge by changing the gas gap. This asymmetry is proportional to the asymmetric extent of electrode structure, namely the ratio of the outer electrode radius to the inner electrode radius. When this ratio is close to unity, a symmetrical discharge can be obtained. With the increase of frequency, the discharge can exhibit a series of nonlinear behaviors such as period-doubling bifurcation, secondary bifurcation and chaotic phenomena. In the period-doubling bifurcation sequence the period-n discharge becomes more and more unstable with the increase of n. The period-doubling bifurcation can also be obtained by altering the discharge gas gap. The mechanisms of two bifurcations are further studied. It is found that the residual quasineutral plasma from the previous discharges and corresponding electric field distribution can weaken the subsequent discharge, and leads to the occurrence of bifurcation.

Key words: atmospheric dielectric-barrier discharge, numerical simulation, nonlinear behaviors

中图分类号:  (Plasma simulation)

  • 52.65.-y
05.45.Pq (Numerical simulations of chaotic systems) 52.80.-s (Electric discharges)