直流电弧等离子体炬的特性研究

Study of the characteristic of D.C.arc plasma torch

介绍了局部热力学平衡下描述直流电弧等离子体炬的磁流体力学模型 ,采用数值模拟方法研究了等离子体炬内等离子体的传热和流动特性、湍流对等离子体炬内等离子体特性的影响 ,以及等离子体炬运行参数对等离子体特性的影响 .

The magnetohydrodynamic model,which describes the plasma flows inside the D.C.arc plasma torch,is presented.By numerical simulations,the plasma flow characteristics inside the plasma torch and the turbulence effects on the flows are studied in detail.Then the parameter studies are carried out.At last,comparisons between the numerically predicated results and the experimental data are made in detail.