| 细磁通量管运动的特征 |
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| 引用本文： | 程久恒.细磁通量管运动的特征[J].中国天文和天体物理学报,1994(3). |
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| 作者姓名： | 程久恒 |
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| 作者单位： | 北京大学地球物理系 |
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| 摘 要： | 从细磁通量管运动方程组导出了特征速度、特征线及其相容关系。这些结果是用特征线法研究细磁通量管运动的基础，也是正确提出定解问题的依据。表征细磁通量管横向波传播的特征速度与管内流动的ＡｌｆｖｅｎＭａｃｈ数有关。当管内流速超过ｋｅｌｖｉｎ－Ｈｅｌｍｈｏｌｔｚ不稳定性临界值时，不存在横向波模式。
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| 关 键 词： | 太阳磁场，MHD，磁通量管 |
The Characteristics of Motion of Thin Magnetic Flux Tubes |
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| CHENG Jiu-heng.The Characteristics of Motion of Thin Magnetic Flux Tubes[J].Chinese Journal of Astronomy and Astrophysics,1994(3). |
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| Authors: | CHENG Jiu-heng |
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| Abstract: | The characteristic velocities and the compatibility relations along characteristics are derived from the system of equations for the motion of thin magnetic flux tubes.These results are basic not only to calculating of the motion of thin magnetic flux tubes but to giving definite conditions correctly as well.The characteristic velocitiesrepresenting the propagation of transverse waves are related with the Alfven Mach number of the flow inside.The mode of transverse waves vanishes when the velocity exceeds the critical value of the Kelvin-Helmholtz instability. |
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| Keywords: | Sun MHD magnetic flux tube |
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