Advance of Plasma Flow and its Intelligent Electromagnetic Control

实验研究是为了阐明播种的进展情况。非平衡等离子体射流在外加磁场中的湍流特性和等离子体-表面相互作用。主要结果如下：(1)通过加入少量的蒸汽钾，实现了对Ar等离子体射流输运性质的功能性增强。(2)阐明了与等离子体射流行为可视化相关的电子和离子在外加磁场中的涨落特性。(3)阐明了外加磁场中等离子体射流撞击平板并沿偏置平板流动的等离子体参数和热流体特性。数值模拟阐明了等离子体射流在外加磁场中的磁控喷入二次气体的感应耦合射频等离子体的流体动力学控制特性。主要研究结果如下：(1)利用射频感应磁场可以直接控制高温区的移动和扩展。从而间接控制了注入粒子的分散和相变。(2)存在控制射频感应热等离子体热流体特性的最佳注入位置和二次气体进口质量分数。

The experimental study was conducted to clarify the advancement by seeding, turbulence characteristics and plasma-surface interactions in the applied magnetic field for the nonequilibrium plasma jet.The main results obtained here are as follows :(1)The functional enhancement of transport properties of argon plasma jet is achieved by seeding a small amount of vapor pottasium.(2)The fluctuation characteristics of electron and ion in the applied magnetic field are clarified relating to the visualization of plasma jet behavior.(3)The plasma parameters and thermo-fluids characteristics of plasma jet impinging on a plate and flowing along the biased plate are clarified in the applied magnetic field.The numerical simulation was conducted to clarify the magnetic control of dusted plasma flow and the fluid-dynamic control chracteristics of inductively coupled RF plasma by injecting a secondary gas.The main results obtained here are as follows :(1)The movement and extension of high temperature region can be directly controlled by applying RF induction magnetic field. This results in the indirect control of the dispersion and phase change of injected particles.(2)There are the optimum injection location and inlet mass fraction of secondary gas to control the thermo-fluid characteristics of RF induction thermal plasma.