磁场作用下的等离子体射流偏转特性数值研究

摘要

Transient numerical simulation on plasma jet in additional magnetic field is conducted based on MHD model coupled with magnetism and flow.The flow field of plasma jet under different magnetic field intensity is mainly analyzed including the dependency between deflection angle and the magnetic field intensity.Numerical results show that the plasma jet flow deflects with an angle due to the Lorentz force caused by external magnetic field, and the deflection angle linearly increases with the increase of magnetic field intensity.%基于MHD模型、耦合磁场和流场,对瞬态等离子体射流在外加磁场作用下的偏转特性进行了数值模拟;主要分析了不同磁场强度下的等离子体流场的流动特性,包括偏转角度及其与磁场强度之间的关系;结果表明:在外加磁场作用下,等离子体射流在洛伦兹力作用下产生了偏转现象,其偏转角度随磁场强度的增大而现近似线性增大趋势.