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arXiv 2603.02432physics.plasm-ph
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Voigt正则化磁流体动力学中的强制重联

Forced Reconnection in Voigt-Regularized MHD

Princeton University(普林斯顿大学);University of Maryland, College Park(马里兰大学帕克分校);National Aeronautics and Space Administration Goddard Space Flight Center(美国国家航空航天局戈达德太空飞行中心)

Andrew Brown, Yi-Min Huang, Amitava Bhattacharjee

AI总结:

本文研究了Voigt正则化磁流体动力学中强制重联现象,揭示了正则化对电流片形成的影响,并提出了非线性岛生长模型。

摘要:

在Hahm-Kulsrud-Taylor问题中,研究了Voigt正则化磁流体动力学中的强制重联。结果显示,Voigt正则化引入了一个早期的线性重联阶段,部分绕过了理想电流片形成阶段。引入了一个类Rutherford模型,描述非线性岛生长和饱和,包括岛屿电流分布的时间依赖性空间变化以及正则化和粘性带来的制动效应。推测并用数值论证表明,在动量方程中包含阻力会导致在长时间极限下精确的MHS平衡。

英文摘要:

Forced reconnection in Voigt-regularized MHD is investigated in the Hahm-Kulsrud-Taylor problem. It is shown that Voigt regularization introduces an early linear phase of reconnection that partially bypasses the ideal current sheet formation phase. A Rutherford-like model of nonlinear island growth and saturation is introduced, including time-dependent spatial variation in the island current distribution and the braking effects of regularization and viscosity. It is conjectured, with numerical justification, that the inclusion of drag in the momentum equation results in precise MHS equilibria in the long-time limit.

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。

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