首页> 外文会议>NATO ARW and IUTAM Symposium Sep 2-7, 2001 Zakopane, Poland >Reconnection in magnetic and vorticity fields
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Reconnection in magnetic and vorticity fields

机译:磁场和涡流场中的重新连接

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Reconnection is an important process of structure formation in fluid dynamics. It occurs in form of vortex reconnection in hydrodynamics as well as in form of magnetic reconnection in plasmas. Two basic types of reconnection are known. The planar two-dimensional reconnection and the more generic, but more complicated three-dimensional case. These two types differ for example with respect to their production of helicity in reconnection. Simple analytic examples of vortex reconnection are given and compared with corresponding solutions of magnetic reconnection. It is shown that, while for magnetic reconnection two-dimensional stationary solutions exist, vortex reconnection always requires a time-dependent velocity field. This explains why vortex reconnection in spite of all similarities often has a more complicated geometry than magnetic reconnection.
机译:重新连接是流体动力学中结构形成的重要过程。它以流体力学中的涡旋重新连接以及等离子体中的磁重新连接的形式出现。重新连接的两种基本类型是已知的。平面二维重新连接以及更通用但更复杂的三维情况。例如,这两种类型在重新连接中产生螺旋度方面有所不同。给出了涡旋重连的简单解析示例,并将其与相应的磁重连解决方案进行了比较。结果表明,对于磁重联,虽然存在二维平稳解,但涡旋重联始终需要与时间有关的速度场。这解释了为什么尽管有所有相似之处,但涡旋重连通常比磁重连具有更复杂的几何形状。

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