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Cited by 23Low-Pressure Plasma Processing and DiagnosticsVacuum and Plasma ArcsMagnetic confinement fusion research

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Using electron fluid models to analyze plasma thruster discharges

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Ahedo, Eduardo·2023·Journal of Electric Propulsion
DOI 10.1007/s44205-022-00035-6
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Abstract

Abstract Fluid models of the slow-dynamics of magnetized, weakly-collisional electrons lead to build computationally-affordable, long-time simulations of plasma discharges in Hall-effect and electrodeless plasma thrusters. This paper discusses the main assumptions and techniques used in 1D to 3D electron fluid models, and some examples illustrate their capabilities. Critical aspects of these fluid models are the expressions for the pressure tensor, the heat flux vector, the plasma-wall fluxes, and the high-frequency-averaged electron transport and heating caused by plasma waves, generated either by turbulence or external irradiation. The different orders of magnitude of the three scalar momentum equations characterize the electron anisotropic transport. Central points of the discussion are: the role of electron inertia, magnetically-aligned meshes versus Cartesian-type ones, the use of a thermalized potential and the infinite mobility limit, the existence of convective-type heat fluxes, and the modeling of the Debye sheath, and wall fluxes. Plasma plume models present their own peculiarities, related to anomalous parallel cooling and heat flux closures, the matching of finite plume domains with quiescent infinity, and solving fully collisionless expansions. Solutions of two 1D electron kinetic models are used to derive kinetically-consistent fluid models and compare them with more conventional ones.

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Metadata

Authors
Ahedo, E.
Affiliations
Universidad Carlos III de Madrid (ES)
Corresponding author
Ahedo, Eduardo
ORCID
Ahedo, Eduardo
Venue
Journal of Electric Propulsion
Publisher
Springer Science and Business Media LLC
Published
2023-01-25
Volume
2
Issue
1
ISSN
2731-4596 (ISSN-L)
DOI
10.1007/s44205-022-00035-6
OpenAlex
W4317937478
Cited by
23
References
3
Citations by year
2026: 5 · 2025: 11 · 2024: 2 · 2023: 5
FWCI
1.71
Type
journal article
Language
en
Open access
Licence
Locations
  • Journal of Electric Propulsion (publishedVersion, cc-by)
  • e-Archivo (Carlos III University of Madrid) (submittedVersion, cc-by)
Funders
Comunidad de Madrid (Y2018/NMT-4750 PROMETEO-CM)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Low-Pressure Plasma Processing and Diagnostics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Vacuum and Plasma Arcs
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Magnetic confinement fusion research
Keywords
electron fluid model, Hall thruster, electrodeless plasma thruster, pressure tensor, heat flux, electron inertia, convective heat flux, plasma sheath, magnetized plasma

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