等离子体电弧炉内流动与传热数值模拟  

NUMERICAL SIMULATION OF HEAT TRANSFER AND FLUID FLOW IN A DC PLASMA-ARC REACTOR

作　　者：邓晶[1,2] 李要建[1] 王蕊[1] 田君国[1] 徐永香[1] 盛宏至[1] 

机构地区：[1]中国科学院力学研究所,北京100190 [2]中国科学院研究生院,北京100190

出　　处：《工程热物理学报》2010年第5期879-882,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.50476081);国家863计划项目(No.2003AA644040)

摘　　要：本文采用磁流体动力学(MHD)模型对直流等离子体自由燃烧电弧和电弧炉内部的流动与传热进行了数值模拟研究。通过对基于磁矢量势描述的电磁场方程组和流体力学方程组的耦合迭代计算,求解得到了流体的温度场和速度场等,计算结果清晰地反映出等离子体电弧的高温阴极射流现象,并与同行的实验和数值结果进行了对比。本模拟方法和结果对于电弧炉的工业应用和优化设计有重要的指导意义。In this work,Magneto-Hydrodynamic（MHD） model is used to simulate the heat transfer and fluid flow situation in the DC argon plasma free-burning arc and arc reactor.Through the coupled iterative computation about electromagnetic equations described by magnetic vector potential and hydrodynamic equations,the temperature and velocity distributions are solved.The simulation results clearly describe the phenomenon of high temperature cathode jet of the plasma-arc,and they are compared with the results solved by other researchers.The numerical simulation model and results have important guiding significance for the industry application and optimal design of the arc reactors.

关 键 词：等离子体 电弧 数值模拟 磁流体 

分 类 号：O316.3[理学—一般力学与力学基础]