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  A new hybrid code (CHIEF) implementing the inertial electron fluid equation without approximation

Muñoz Sepúlveda, P. A., Jain, N., Kilian, P., & Büchner, J. (2018). A new hybrid code (CHIEF) implementing the inertial electron fluid equation without approximation. Computer Physics Communications, 224, 245-264. doi:10.1016/j.cpc.2017.10.012.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-602C-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-1B9E-0
Genre: Journal Article

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 Creators:
Muñoz Sepúlveda, Patricio A.1, Author              
Jain, N.1, Author              
Kilian, P., Author
Büchner, Jörg1, Author              
Affiliations:
1Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832289              

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 MPIS_GROUPS: Sun and Heliosphere: Theory and Simulation of Solar System Plasmas
 MPIS_PROJECTS: Theory: Sim Sol Sys Plasma
 Abstract: We present a new hybrid algorithm implemented in the code CHIEF ( Code Hybrid with Inertial Electron Fluid) for simulations of electron–ion plasmas. The algorithm treats the ions kinetically, modeled by the Particle-in-Cell (PiC) method, and electrons as an inertial fluid, modeled by electron fluid equations without any of the approximations used in most of the other hybrid codes with an inertial electron fluid. This kind of code is appropriate to model a large variety of quasineutral plasma phenomena where the electron inertia and/or ion kinetic effects are relevant. We present here the governing equations of the model, how these are discretized and implemented numerically, as well as six test problems to validate our numerical approach. Our chosen test problems, where the electron inertia and ion kinetic effects play the essential role, are: 0) Excitation of parallel eigenmodes to check numerical convergence and stability, 1) parallel (to a background magnetic field) propagating electromagnetic waves, 2) perpendicular propagating electrostatic waves (ion Bernstein modes), 3) ion beam right-hand instability (resonant and non-resonant), 4) ion Landau damping, 5) ion firehose instability, and 6) 2D oblique ion firehose instability. Our results reproduce successfully the predictions of linear and non-linear theory for all these problems, validating our code. All properties of this hybrid code make it ideal to study multi-scale phenomena between electron and ion scales such as collisionless shocks, magnetic reconnection and kinetic plasma turbulence in the dissipation range above the electron scales.

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Language(s): eng - English
 Dates: 2018-02-0220172018
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.cpc.2017.10.012
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Title: Computer Physics Communications
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier B.V.
Pages: - Volume / Issue: 224 Sequence Number: - Start / End Page: 245 - 264 Identifier: ISSN: 0010-4655
CoNE: https://pure.mpg.de/cone/journals/resource/954925392326