arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1607.00535physics.space-phastro-ph.EPphysics.plasm-ph
收藏

再连接流出中的能量交换

Energy exchanges in reconnection outflows

Giovanni Lapenta, Martin V. Goldman, Davd L. Newman, Stefano Markidis

摘要:

重连流出是与周围等离子体或来自其他重连区域的流相互作用的高能定向流。在这些条件下,流动变得非常不稳定和混乱,因为任何流动射流与介质相互作用。我们在这里报告大规模并行模拟的两种情况下的相互作用之间的流出射流和一个单一的外流与周围的等离子体。我们发现在这两种情况下的发展混乱的磁场,受到二次重联事件,进一步复杂化的拓扑结构的磁力线。本分析的重点是能量平衡。我们计算每个能量通道(电磁,体积,热,每个物种),并找到最多的能量交换的地方和形式。主要的发现是,最大的能量交换是不是在重联网站适当的,但在流出射流不稳定的区域。

英文摘要:

Reconnection outflows are highly energetic directed flows that interact with the ambient plasma or with flows from other reconnection regions. Under these conditions the flow becomes highly unstable and chaotic, as any flow jets interacting with a medium. We report here massively parallel simulations of the two cases of interaction between outflow jets and between a single outflow with an ambient plasma. We find in both case the development of a chaotic magnetic field, subject to secondary reconnection events that further complicate the topology of the field lines. The focus of the present analysis is on the energy balance. We compute each energy channel (electromagnetic, bulk, thermal, for each species) and find where the most energy is exchanged and in what form. The main finding is that the largest energy exchange is not at the reconnection site proper but in the regions where the outflowing jets are destabilized.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑