Explosive Turbulent Magnetic Reconnection
Explosive Turbulent Magnetic Reconnection
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DOI：
10.1103/physrevlett.110.255001
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发表时间：
2013-06-17
影响因子：
8.6
通讯作者：
Hoshino, M.
中科院分区：
文献类型：
--
作者：
Higashimori, K.;Yokoi, N.;Hoshino, M.
我们报道了一个新发展的雷诺平均磁流体模型对湍流磁重联的模拟结果。我们发现初始的Harris电流片有三种发展方式，取决于湍流的强度：层流重联、湍流重联和湍流扩散。湍流重联将磁场能量爆炸性地转换为等离子体的动能和热能，并产生开放的快速重联喷流。这种快速的湍流重联是通过湍流扩散的局部化实现的。此外，在平均场和湍流的相互作用下，形成了局域结构。
We report simulation results for turbulent magnetic reconnection obtained using a newly developed Reynolds-averaged magnetohydrodynamics model. We find that the initial Harris current sheet develops in three ways, depending on the strength of turbulence: laminar reconnection, turbulent reconnection, and turbulent diffusion. The turbulent reconnection explosively converts the magnetic field energy into both kinetic and thermal energy of plasmas, and generates open fast reconnection jets. This fast turbulent reconnection is achieved by the localization of turbulent diffusion. Additionally, localized structure forms through the interaction of the mean field and turbulence.