Advance of Plasma Flow and its Intelligent Electromagnetic Control

本文通过实验研究了在外加磁场下，通过催化、湍流特性和等离子体-表面相互作用对非平衡等离子体射流输运特性的影响，主要结果如下：（1）催化少量的钾蒸气可以有效地增强氩等离子体射流的输运特性。（2）阐明了电子和离子在外加磁场中的涨落特性，并与等离子体射流行为的可视化有关。（3）研究了等离子体射流在外加磁场作用下撞击平板和沿偏置平板沿着流动的等离子体参数和热流体特性，并对等离子体流场的磁控控制和二次气体对感应耦合射频等离子体流场的流体动力学控制特性进行了数值模拟，主要结果如下：（1）施加射频感应磁场可直接控制高温区的移动和延伸。这导致了对注入颗粒的分散和相变的间接控制。（2）控制射频感应热等离子体热流特性存在最佳的二次气体注入位置和二次气体入口质量分数。

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.