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Title: The island coalescence problem: Scaling of reconnection in extended fluid models including higher-order moments

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4935302· OSTI ID:1256589

As modeling of collisionless magnetic reconnection in most space plasmas with realistic parameters is beyond the capability of today's simulations, due to the separation between global and kinetic length scales, it is important to establish scaling relations in model problems so as to extrapolate to realistic scales. Furthermore, large scale particle-in-cell simulations of island coalescence have shown that the time averaged reconnection rate decreases with system size, while fluid systems at such large scales in the Hall regime have not been studied. Here, we perform the complementary resistive magnetohydrodynamic (MHD), Hall MHD, and two fluid simulations using a ten-moment model with the same geometry. In contrast to the standard Harris sheet reconnection problem, Hall MHD is insufficient to capture the physics of the reconnection region. Additionally, motivated by the results of a recent set of hybrid simulations which show the importance of ion kinetics in this geometry, we evaluate the efficacy of the ten-moment model in reproducing such results.

Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AGS-1056898; AGS-138944; AGS-14606169; PHY-1229408; NNX13AK31G; AC02-05CH11231; AC02-09CH11466; SC0006670; DESC0006670
OSTI ID:
1256589
Alternate ID(s):
OSTI ID: 1225250
Report Number(s):
PPPL-5187; PHPAEN
Journal Information:
Physics of Plasmas, Vol. 22, Issue 11; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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Cited By (17)

Gyrokinetic continuum simulation of turbulence in a straight open-field-line plasma journal May 2017
A review of the 0.1 reconnection rate problem journal September 2017
Drift Instabilities in Thin Current Sheets Using a Two‐Fluid Model With Pressure Tensor Effects journal May 2019
Global Ten‐Moment Multifluid Simulations of the Solar Wind Interaction with Mercury: From the Planetary Conducting Core to the Dynamic Magnetosphere journal November 2019
An Extended MHD Study of the 16 October 2015 MMS Diffusion Region Crossing journal November 2019
Continuum kinetic and multi-fluid simulations of classical sheaths journal February 2017
Simulations of anti-parallel reconnection using a nonlocal heat flux closure journal August 2017
Study of magnetic reconnection in large-scale magnetic island coalescence via spatially coupled MHD and PIC simulations journal August 2018
Using the maximum entropy distribution to describe electrons in reconnecting current sheets journal August 2018
Role of electron inertia and electron/ion finite Larmor radius effects in low-beta, magneto-Rayleigh-Taylor instability journal September 2018
Why does Steady-State Magnetic Reconnection have a Maximum Local Rate of Order 0.1? journal February 2017
Continuum Kinetic and Multi-Fluid Simulations of Classical Sheaths text January 2016
Why does steady-state magnetic reconnection have a maximum local rate of order 0.1? text January 2016
Gyrokinetic continuum simulation of turbulence in a straight open-field-line plasma text January 2017
Using the maximum entropy distribution to describe electrons in reconnecting current sheets text January 2018
An extended MHD study of the 16 October 2015 MMS diffusion region crossing text January 2019
Drift instabilities in thin current sheets using a two-fluid model with pressure tensor effects text January 2019