Pressure-strain interaction. III. Particle-in-cell simulations of magnetic reconnection

被引：15

作者：

Barbhuiya, M. Hasan ^{[1
]}

Cassak, Paul A.

机构：

[1] West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA

来源：

PHYSICS OF PLASMAS | 2022年 / 29卷 / 12期

关键词：

DISSIPATION;

D O I：

10.1063/5.0125256

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

How energy is converted into thermal energy in weakly collisional and collisionless plasma processes, such as magnetic reconnection and plasma turbulence, has recently been the subject of intense scrutiny. The pressure-strain interaction has emerged as an important piece, as it describes the rate of conversion between bulk flow and thermal energy density. In two companion studies, we presented an alternate decomposition of the pressure-strain interaction to isolate the effects of converging/diverging flow and flow shear instead of compressible and incompressible flow, and we derived the pressure-strain interaction in magnetic field-aligned coordinates. Here, we use these results to study pressure-strain interaction during two-dimensional anti-parallel magnetic reconnection. We perform particle-in-cell simulations and plot the decompositions in both Cartesian and magnetic field-aligned coordinates. We identify the mechanisms contributing to positive and negative pressure-strain interaction during reconnection. This study provides a roadmap for interpreting numerical and observational data of the pressure-strain interaction, which should be important for studies of reconnection, turbulence, and collisionless shocks. Published under an exclusive license by AIP Publishing.

引用

页数：13

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