中国电工技术学会等离子体及应用专业委员会
2017年5月15日
Introduction to the Special Issue of the National Conference on High Voltage & Discharge Plasmas
Discharge plasmas have a wide application prospect in material processing, combustion, environmental protection, biomedicine and so on. However, the complexity of plasma itself and its interaction with materials leads to a big challenge for the researches. In order to promote the development of discharge plasma in the electrical engineering disciplines of China, the Plasmas and their Applications Committee in the China Electrotechnical Society was formally approved and set up on April 20, 2016 . Subsequently, the committee organized a National Conference on High Voltage & Dishcarge Plasmas in November 26-27 the same year in Beijing. More than 431 people participated in the conference who were from more than 110 universities, research institutes and business community. The conference received a total of 281 abstracts and 132 full papers. Thanks to the effort made by the two guest editors, associate professor Dingxin Liu with Xi’an Jiaotong University and associate professor Xinjing Cai with Northeast Electric Power University, in soliciting papers and managing their peer review, 22 papers were recommended to be published in
(1) Development of plasma sources. Huimin Song, from Air Force Engineering University, studied the arrangement of a three-electrode actuator and its matching characteristics with different power supply, and it is suggested that the rise speed of trigger voltage has important influences on the trigger characteristics. Fada Feng, from Jiaying University, proposed a novel back corona discharge source which is suitable for the combination of plasma and catalysis. Junfeng Rao, from the University of Shanghai for Science and Technology, designed a high-repetition pulse power source based on avalanche transistor, which can realize an output of high-repetition nanosecond pulse with a peak voltage of 1 kV.
(2) Numerical study on plasma characteristics. Dong Dai, from South China University of Technology, studied the effects of voltage and frequency on the time evolution of nonlinear phenomenon of dielectric barrier discharge by a 1-D fluid model, and then determined the quantitative relationship between the dissipation rate of positive column and the dynamic state of the plasma. Jian Chen, From Tsinghua University, developed a 1-D fluid model to describe the motions of each component in a metal ion extraction process, from which the ion extraction time and efficiency under different operating conditions were given. Wenjun Ning, from South China University of Technology, simulated the short-gap dielectric barrier discharge, and found that the appearance and evolution of nonlinear phenomenon is probably due to the mismatch between the generation and quenching of electron and ions.
(3) Experimental study on plasma characteristics. Zhi Fang, from Nanjing Tech University, studied the influence of HMDSO admixture on the discharge characteristics of an argon plasma jet array, and found that the spectral intensity of Si maximized when the concentration of HMDSO is 0.02%. Jie Li, from Dalian University of Technology, found that the porous insulating material attached to the low-voltage electrode would enhance the plasma intensity in a line-plate discharge device. Congwei Yao, from Xi’an Jiaotong University, studied the effect of voltage frequency on the plane-to-plane dielectric barrier discharge, and found that the increase of frequency would enhance the plasma homogeneity but also lead to nonlinearity. Ping Li, from Xi’an Jiaotong University, studied the dielectric barrier discharge in CH4 with different electrode configurations, and found that the needle-to-plane configuration is better than the plane-to-plane one to meet the application requirements.
(4) Applied research of plasmas. Wansheng Nie, from Equipment Academy, reviewed the plasma assisted combustion by nanosecond pulsed discharge, including the content of combustion enhancing theory, experimental and application studies, and diagnostics and simulation technologies, and finally pointed out the challenges and prospects of the research in this field. Ruixue Wang, from Institute of Electrical Engineering of Chinese Academy of Science, optimized the measuring method for the surface charge on dielectric materials, and studied the change of electrical characteristics of the material surface after plasma treatment. Shuliang Xu, from Dalian Maritime University, studied the heterogeneous mass transfer with the technology of the combination of high electric field discharge and hydraulic cavitation, and demonstrated that the hydraulic cavitation had remarkable influences on the mass transfer efficiency of reactive oxygen species. Yiping Tian, from Dalian Maritime University, developed a rapid disinfection technology for drinking water based on the combination of micro-streamer and micro-glow discharges, and evaluated the inactivation efficiency and the changes of general water-quality after the emergency treatment for the water with different original qualities.
On the occasion of this special issue, we would like to thank all the experts and scholars for their concern to the 2016 National Conference on High Voltage & Discharge Plasmas, the chairman and associate chairman of the conference for their guidance and help on this special issue, and the authors and reviewers for their great contribution. We specially appreciate the editors of
Plasmas and Their Applications Committee of China Electrotechnical Society
May 15, 2017