| 宏观速度对电弧螺旋不稳定性影响的数值分析 |
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| 引用本文： | 宫野,张鹏云,刘宇宏,马腾才. 宏观速度对电弧螺旋不稳定性影响的数值分析[J]. 计算物理, 1998, 15(5): 614-619 |
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| 作者姓名： | 宫野 张鹏云 刘宇宏 马腾才 |
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| 作者单位： | 大连理工大学三束材料改性国家重点实验室 116024 |
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| 基金项目： | 国家自然科学基金和三束实验室开放课题资助项目 |
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| 摘 要： | 采用抛物型电导率和与时间有关的线性微扰理论,给出了有宏观速度存在的热势分布(温度分布)、稳定性条件以及不稳定性增长率等定量结果。
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| 关 键 词： | 电弧 螺旋不稳定性 宏观速度 |
| 收稿时间： | 1997-08-30 |
| 修稿时间： | 1998-04-16 |
NUMERICAL ANALYSIS OF EFFECT OF MACRO-VELOCITY ON HELICAL INSTABILITY OF ARCS |
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| Gong Ye,Zhang Pengyun,Liu Yuhong,Ma Tengcai. NUMERICAL ANALYSIS OF EFFECT OF MACRO-VELOCITY ON HELICAL INSTABILITY OF ARCS[J]. Chinese Journal of Computational Physics, 1998, 15(5): 614-619 |
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| Authors: | Gong Ye Zhang Pengyun Liu Yuhong Ma Tengcai |
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| Affiliation: | State Key Lab. for Mater. Modif. by Laser, Ion and Electron Beams, Dalian Univ. of Tech., Dalian 116024 |
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| Abstract: | The helical instability of an arc column with electrical conductivity of the parabolic distribution and macro velocity is discussed in an axial magnetic field. The magnetohydrodynamic equations serve as the starting point of the theory, in an electrostatic approximation and a linear time dependent perturbation theory, the perturbation equations for the arc column movement are deduced. Solutions of these equations are obtained analytically, from which the stability limit of the cylindrical arc and the growth rate of the helical instability are given. |
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| Keywords: | electrical arc helical instability macro velocity |
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