| 旋转磁场作用下电弧螺旋不稳定性的数值研究 |
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| 引用本文： | 宫野,张林.旋转磁场作用下电弧螺旋不稳定性的数值研究[J].大连理工大学学报,1997,37(1):37-42. |
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| 作者姓名： | 宫野 张林 |
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| 作者单位： | 大连理工大学物理系 |
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| 摘 要： | 讨论了大气压、轴向磁场作用下电弧螺旋不稳定性。在给定电子温度分布情况下，采用双层准通道模型，通过数值求解电磁场方程以及质量守恒、动量守恒、能量守恒方程等，分别给出了短波和长波扰动下的色散关系。数值结果表明，粘滞力、轴向磁场约束对螺旋不稳定性具有抑制作用。
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| 关 键 词： | 电弧 螺旋不稳定性 等离子体 旋转磁场 |
Study of numerical value of helical instability of arcs in rotating magnetic field |
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| Gong Ye,Zhang Lin,Li Guobing,Ma Tengcai.Study of numerical value of helical instability of arcs in rotating magnetic field[J].Journal of Dalian University of Technology,1997,37(1):37-42. |
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| Authors: | Gong Ye Zhang Lin Li Guobing Ma Tengcai |
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| Abstract: | The helical instability of rotating arcs is discussed under high atmospheric conditions and axial magnetic field. From the known electron temperature, by bilayer quasi channel model, the dispersion relation is given by numerically solving the electromagnetic equations in an electrostatic approximation and the balances of mass, momentum, and energy. The dispersion relations of long wave perturbation and short wave perturbation are discussed. At the same time, the influence of a superimposed axial magnetic field on the instability is also discussed. |
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| Keywords: | magnetic fields electrical arc screw instability dispersion relation |
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