Abstract
大气压射频热等离子体由于高比焓、低流速以及无电极污染，近年来广泛应用于粉末球化、耐烧蚀涂层喷涂和纳米粉体合成等领域。本文基于二维轴对称磁流体方程组，建立大气压氩气射频热等离子体仿真模型，研究了不同工况和结构参数下放电管内等离子体温度场、速度场以及焦耳热、辐射耗散和洛伦兹力分布特征。重点研究了放电高温区域前端涡流场形态及其形成的原因，讨论了两种不同涡流形态之间的转变条件，并计算了不同线圈功率，放电频率、中心管内径和出口位置条件下涡流形态转变所需的中心气体临界流量，研究结果为射频热等离子体工况参数的选取以及中心管粉末供给系统的设计提供重要理论依据。
Published Version
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