基于FLUENT的二维感应耦合等离子体炬数值模拟

摘要

Considering plasma as magnetic fluid in which both fluid properties and electromagnetic effects are taken into account,a numerical simulation method is introduced where FLUENT software has been developed to solve electromagnetic equation continuity equation,momentum conservation equation as well as energy conservation equation. The electromagnetic field formulated in terms of vector potential,temperature and velocity profile are obtained. Numerical simulation is carried to investigate the electromagnetic field,temperature and velocity profile of inductively coupled plasma (ICP) torch. In particular,the physical mechanisms of temperature and velocity profile are emphatically analyzed,which offer a much better way to understand the spheroidization of powders by ICP torch.%将等离子体作为磁流体,考虑其流体属性和电磁属性,介绍了利用FLUENT软件包并将其进行二次开发,解算电磁场方程、质量连续性方程、动量守恒方程、以及能量守恒方程的数值模拟方法,得到了以磁矢势为表达形式的电磁场分布、温度分布和速度分布.数值模拟了粉末球化所用的感应耦合等离子体炬电磁场分布、温度分布、速度分布.分析了温度分布、速度分布产生的物理原因,为感应耦合等离子体炬球化粉末颗粒提供理论性指导.