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热等离子体的应用在节约能源和能源开发方面起着愈来愈重要的作用。本文从理论和实验方面研究了横向磁场作用下自由电弧的温度场和速度场。从七个方向测量了非柱对称弧柱的谱线强度H_β的分布。再通过Maldonado-Olsen转换求得发射系数场和温度场。借助于能量方程、连续方程等数值计算得到弧柱中的速度场。最后,对实验和计算结果进行了讨论,提出了有旋洛伦兹力能感应出流场的物理机制,它将有助于热等离子体在能源科学中获得更广泛的应用。
Thermal plasma applications play an increasingly important role in energy conservation and energy development. In this paper, the temperature field and velocity field of free arc under transverse magnetic field are studied theoretically and experimentally. The distribution of the line intensity H_β of the non-column symmetric arc column was measured from seven directions. Then through the conversion of Maldonado-Olsen obtained emission coefficient and temperature field. The velocity field in the arc column is calculated by means of energy equation and continuous equation. Finally, the experimental and computational results are discussed, and the physical mechanism of the rotation Lorentz force induced by the flow field is proposed. It will help the thermal plasma to be more widely used in energy science.