Simulation of electric arc with refractory cathode and evaporating anode
Simulation of electric arc with refractory cathode and evaporating anode
复制标题
耐火阴极和蒸发阳极电弧模拟
DOI：
10.15407/tpwj2014.09.02
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
V. Demchenko
中科院分区：
文献类型：
--
作者：
I. Krikent;I. Krivtsun;V. Demchenko
本文提出了电弧等离子体中电离金属蒸气的对流扩散方程，考虑了原子、单电荷和双电荷金属离子扩散系数的差异，金属粒子热扩散流的存在，以及电场中离子的漂移，以更精确地定义早期发展的能量过程的复杂模型，在惰性气体中运行的具有耐火阴极和蒸发阳极的电弧柱和阳极区中的质量和电荷传递。在此精确的复杂数学模型的基础上，数值分析了阳极材料（Fe）的扩散诱导蒸发对含耐火阴极（W）的静止电弧在惰性气体（Ar）中运行时的柱体和阳极区的多组分等离子体的热、气体动力学和电磁特性的影响。本文讨论了电弧阳极结合区金属表面温度分布对近阳极等离子体中温度和电流密度分布以及对蒸发阳极表面热影响的分布和整体特性的重要影响。18参考文献，12位数。
Equation of convective diffusion of ionized metal vapour in arc plasma, allowing for the difference in coefficients of diffusion of atoms, singleand double-charged metal ions, presence of thermodiffusion flows of metal particles, as well as ion drift in the electric field, was proposed to more precisely define the earlier developed complex model of the processes of energy, mass and charge transfer in the column and anode region of electric arc with refractory cathode and evaporating anode, running in inert gas. Based on the thus precised complex mathematical model, numerical analysis of the influence of diffusion-induced evaporation of anode material (Fe) on heat, gas-dynamic and electromagnetic characteristics of multicomponent plasma of the column and anode region of stationary electric arc with refractory cathode (W) at its running in inert gas (Ar) was performed. An essential influence of metal surface temperature distribution in the region of anode binding of the arc on distribution of temperature and electric current density in near-anode plasma, as well as on distributed and integral characteristics of its thermal impact on evaporating anode surface, is shown. 18 Ref., 12 Figures.