气体流速对等离子体射流长度的影响  

The Influence of Gas Flow Rate on the Length of Plasma Jet

作　　者：李作召 张大伟[1] 

机构地区：[1]沈阳理工大学自动化与电气工程学院,辽宁沈阳110159

出　　处：《成组技术与生产现代化》2016年第1期60-62,共3页Group Technology & Production Modernization

摘　　要：为了研究气体流速对大气压低温氩等离子体射流长度的影响,确定实际应用中最佳射流条件,首先建立二维轴对称模型,进行数值仿真,然后根据仿真结果进行了实验研究.实验结果与仿真结果基本吻合.气体流动处于层流时,射流几乎不能被观察到;气体流动处于过渡态时,射流比较好,射流长度最长;气体流动处于湍流状态时,射流尖端变得不稳定,射流长度有所减小.In order to study the influence of gas flow rate on the length of atmospheric pressure low temperature argon plasma jet and determine the optimum jet condition in practical application,the numerical simulation is carried out firstly by establishing a two- dimensional axisymmetric model,and then experimental study is carried out according to the simulation results. The research shows that the experimental results are in agreement with the simulation results. When gas flow is in laminar flow,the plasma jet can hardly be observed. When gas flow is in the transition state,the jet is better and the length of the jet is the longest. When gas flow is in the turbulent state,the jet tip becomes unstable and the length of the jet is reduced.

关 键 词：低温氩等离子体射流 介质阻挡放电 仿真模型 射流长度 气体流速换算 

分 类 号：TM89[电气工程—高电压与绝缘技术]