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Title: Structure and computation of two-dimensional incompressible extended MHD

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4974039· OSTI ID:1535294
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [4]
  1. ISC-CNR and Politecnico di Torino, Torino (Italy). Dept. di Energia
  2. Université de Toulon, Marseille, (France)
  3. Univ. of Tokyo, Kashiwa, Chiba (Japan). Graduate School of Frontier Sciences; Mansoura Univ., Mansoura (Egypt). Physics Dept., Faculty of Science
  4. Univ. of Texas, Austin, TX (United States). Dept. of Physics and Inst. for Fusion Studies

A comprehensive study of the extended magnetohydrodynamic model obtained from the two-fluid theory for electrons and ions with the enforcement of quasineutrality is given. Starting from the Hamiltonian structure of the fully three-dimensional theory, a Hamiltonian two-dimensional incompressible four-field model is derived. In this way, the energy conservation along with four families of Casimir invariants is naturally obtained. The construction facilitates various limits leading to the Hamiltonian forms of Hall, inertial, and ideal MHD, with their conserved energies and Casimir invariants. Basic linear theory of the four-field model is treated, and the growth rate for collisionless reconnection is obtained. Finally, results from nonlinear simulations of collisionless tearing are presented and interpreted using, in particular, normal fields, a product of the Hamiltonian theory that gives rise to simplified equations of motion.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-04ER54742; FG02-04ER-54742
OSTI ID:
1535294
Alternate ID(s):
OSTI ID: 1361737
Journal Information:
Physics of Plasmas, Vol. 24, Issue 1; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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Translationally symmetric extended MHD via Hamiltonian reduction: Energy-Casimir equilibria journal September 2017
Direction of cascades in a magnetofluid model with electron skin depth and ion sound Larmor radius scales journal July 2018

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