Influence of arc current and pressure on non-chemical equilibrium air arc behavior  

作　　者：吴翊 崔彧菲 段嘉炜 孙昊 王春林 纽春萍 

机构地区：[1]State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University

出　　处：《Plasma Science and Technology》2018年第1期142-149,共8页等离子体科学和技术（英文版）

基　　金：supported by the National Key Basic Research Program of China (973 Program) (No. 2015CB251002);National Natural Science Foundation of China under grant Nos. 51521065, 51577145 and 51707144;the State Key Laboratory of Electrical Insulation and Power Equipment (No. EIPE17305)

摘　　要：The influence of arc current and pressure on the non-chemical equilibrium （non-CE） air arc behavior of a nozzle structure was investigated based on the self-consistent non-chemical equilibrium model. The arc behavior during both the arc burning and arc decay phases were discussed at different currents and different pressures. We also devised the concept of a non- equilibrium parameter for a better understanding of non-CE effects. During the arc burning phase, the increasing current leads to a decrease of the non-equilibrium parameter of the particles in the arc core, while the increasing pressure leads to an increase of the non-equilibrium parameter of the particles in the arc core. During the arc decay phase, the non-CE effect will decrease by increasing the arc burning current and the nozzle pressure. Three factors together-- convection, diffusion and chemical reactions--influence non-CE behavior.The influence of arc current and pressure on the non-chemical equilibrium （non-CE） air arc behavior of a nozzle structure was investigated based on the self-consistent non-chemical equilibrium model. The arc behavior during both the arc burning and arc decay phases were discussed at different currents and different pressures. We also devised the concept of a non- equilibrium parameter for a better understanding of non-CE effects. During the arc burning phase, the increasing current leads to a decrease of the non-equilibrium parameter of the particles in the arc core, while the increasing pressure leads to an increase of the non-equilibrium parameter of the particles in the arc core. During the arc decay phase, the non-CE effect will decrease by increasing the arc burning current and the nozzle pressure. Three factors together-- convection, diffusion and chemical reactions--influence non-CE behavior.

关 键 词：arc buming phase arc decay phase chemical reaction arc current PRESSURE 

分 类 号：TL[核科学技术]