Three-dimensional steady-state magnetic reconnection
Three-dimensional steady-state magnetic reconnection
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三维稳态磁重联
DOI：
10.1017/s0022377800017657
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发表时间：
1994
影响因子：
2.5
通讯作者：
M. Jardine
中科院分区：
文献类型：
--
作者：
M. Jardine
一个家庭的三维模型的重联中，不同的家庭成员的特点是涡与等离子体流向重联网站。这种流入的性质也决定了流出喷流的大小和速度，流出喷流携带重联磁力线离开重联点，以及束缚它的MHD激波的形状。正涡度流是通量堆积型的，流出喷流速度最快，位置最靠西。在具有负涡度的情况中，有一种是Petschek重联的三维模拟。并非所有涡度和重联率的组合都是可能的;对于那些具有负涡度的解，存在最大重联率。随着磁雷诺数Rme或电流密度的增加，该最大值减小，并且可能的解决方案类型变得更加朝向通量堆积和缓慢压缩制度的两个极端极化。给定涡度和流入速度的分布，这些模型给出了可能的稳态重连率的相应分布。作为一个说明性的例子，我们采取高斯分布两者表明，所得到的分布是由通量堆积制度。
A family of three-dimensional models of reconnection is presented in which the different members of the family are characterized by the vorticity with which plasma flows towards the reconnection site. The nature of this inflow also determines the size and speed of the outflow jet that carries reconnected field lines away from the reconnection site, and the shape of the MHD shocks that bound it. Flows with positive vorticity are of a flux pile-up type, for which the outflow jet is fastest and narrowest. Among those with negative vorticity is the three-dimensional analogue of Petschek reconnection. Not all combinations of vorticity and reconnection rate are possible; for those solutions with negative vorticity, there is a maximum reconnection rate. As the magnetic Reynolds number Rme or the current density is increased, this maximum is reduced and the possible types of solution become more polarized towards the two extremes of flux pile-up and slow compression regimes. Given a distribution of vorticities and inflow speeds, these models give the corresponding distribution of possible steady-state reconnection rates. As an illustrative example, we take Gaussian distributions of both to show that the resulting distribution is dominated by the flux pile-up regime.
影响因子：
4.6
作者：
D. Biskamp
通讯作者：
D. Biskamp