Commun. Comput. Phys., 11 (2012), pp. 1006-1021.


Simulation of Plasma Flow Injection with Multi-Hierarchy Model Aiming Magnetic Reconnection Studies

S. Usami 1*, H. Ohtani 2, R. Horiuchi 2, M. Den 3

1 Department of Helical Plasma Research, National Institute for Fusion Science, Toki, 509-5292, Japan.
2 Department of Helical Plasma Research, National Institute for Fusion Science, Toki, 509-5292, Japan; and the Graduate University for Advanced Studies (Soken-dai), Toki, 509-5292, Japan.
3 National Institute of Information and Communications Technology, Koganei 184-8795, Japan.

Received 18 October 2010; Accepted (in revised version) 9 June 2011
Available online 18 November 2011
doi:10.4208/cicp.181010.090611a

Abstract

A multi-hierarchy simulation model aiming magnetic reconnection studies is developed and improved in which macroscopic and microscopic physics are computed consistently and simultaneously. Macroscopic physics is solved by magnetohydrodynamics (MHD) algorithm, while microscopic dynamics is expressed by particle-in-cell (PIC) algorithm. The multi-hierarchy model relies on the domain decomposition method, and macro- and micro-hierarchies are interlocked smoothly by hand-shake scheme. As examination, plasma flow injection is simulated in the multi-hierarchy model. It is observed that plasmas flow from a macro-hierarchy to a micro-hierarchy across the magnetic field smoothly and continuously.

AMS subject classifications: 85D10, 93B40, 70B05, 76W05
Key words: Multi-hierarchy simulation, magnetic reconnection, MHD, PIC.

*Corresponding author.
Email: usami.shunsuke@nifs.ac.jp (S. Usami), ohtani.hiroaki@nifs.ac.jp (H. Ohtani), horiuchi.ritoku@nifs.ac.jp (R. Horiuchi), den@nict.go.jp (M. Den)
 

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