涡旋诱发重联模型（Ⅰ）——动力学特性

本文首先从理论上系统地研究了涡旋诱发重联的基本动力学特性.包括:涡旋诱发重联的物理机制;Kelvin-Helmholtz（K-H）不稳定性和撕裂模不稳定性耦合过程;磁流体涡管的基本特性;不同尺度涡旋间的相互作用,动能和磁能间的转化及准稳态时流线、磁力线、等涡度线和等电流密度线的相似性等.用二维MHD数值模拟方法研究了上述一些特性,并与理论分析结论进行了比较.结果表明,模拟结果证实了理论推论.涡旋诱发重联是产生局部磁场重联的重要机制之一,该模型在磁顶区的应用将另文发表.

THE MODEL OF VORTEX INDUCED RECONNECTION （Ⅰ）——DYNAMIC CHARACTERS

It is supposed that vortex induced reconnection （V1R） is an important mechanism of local magnetic field reconnection in the space plasma. The dynamic characters of VIR are investigated systematically from theory and MHD simulation, which include: physical mechanism of VIR, coupling processes of the Kelvin-Helmholtz （K-H） instability and tearing mode instability, coalescent processes of small-scale vortices and magnetic islands, the conversions between kinetic energy and magnetic energy, and analogies between the streamlines, magnetic field lines and contour lines of current and vorticity. It was found that the theoretical results are consistent with simulation. The application of VIR model to the earth's magnetopause will study in the another paper.