Differences in the acoustic characteristics of DC bias alternating arcs in argon,helium,and nitrogen  

作　　者：Yutai Li Qinghao Wen Yangyang Fu Xiaobing Zou Handong Li Zhigang Liu Haiyun Luo Dun Qian Zhe Chen Xinxin Wang 李雨泰;文清皓;付洋洋;邹晓兵;黎晗东;刘志刚;罗海云;钱盾;陈喆;王新新(Xuefeng Mountain Energy Equipment Safety National Observation and Research Station,Chongqing University,Chongqing 400044,China;China Huaneng Group Co.,Ltd.,Beijing 100031,China;Department of Electrical Engineering,Tsinghua University,Beijing 100084,China;China Three Gorges Renewables(Group)Co.,Ltd.,Beijing 101199,China;School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China;Electric Power Research Institute,State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310014,China)

机构地区：[1]Xuefeng Mountain Energy Equipment Safety National Observation and Research Station,Chongqing University,Chongqing 400044,China [2]China Huaneng Group Co.,Ltd.,Beijing 100031,China [3]Department of Electrical Engineering,Tsinghua University,Beijing 100084,China [4]China Three Gorges Renewables(Group)Co.,Ltd.,Beijing 101199,China [5]School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China [6]Electric Power Research Institute,State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310014,China

出　　处：《Chinese Physics B》2024年第12期341-350,共10页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.51877118 and 52077117)。

摘　　要：The acoustic effects of gas discharge plasma have received much attention.Previous studies have shown that cold plasma and thermal plasma have different principles of sound generation.In this paper,the differences in the acoustic characteristics of DC bias alternating arc plasma(thermal plasma)in different gas environments(argon,helium,and nitrogen)are investigated by combining experiments and simulations.Many processes in industrial machining involve this arc plasma.It was found that the acoustic characteristics of the arcs of these three gases are significantly different.The two key parameters,electrical and thermal conductivity of the gas,determine the acoustic characteristics of the arc by influencing the electric power of the arc and the heat dissipation through the anode.At the same drive current,the nitrogen arc has the largest voltage drop and the helium arc has the highest electroacoustic conversion efficiency.This results in the acoustic pressure amplitude being helium,nitrogen,and argon in descending order.The research contributes to a deeper understanding of the vocalization mechanism of arc plasma and provides theoretical guidance on gas selection for arc acoustic wave applications.

关 键 词：arc discharge gas discharge and plasma arc acoustic wave acoustic characteristics 

分 类 号：O461[理学—电子物理学] O53[理学—物理]