Hyperbolic system approach for magnetized electron fluids in exb discharge plasmas

Rei Kawashima, Zhexu Wang, Sainadh Chamarthi, Hiroyuki Koizumi, Kimiya Komurasaki

研究成果: Conference contribution

1 被引用数 (Scopus)


Numerical analyses of plasma waves in E×B plasma devices require a computational method for magnetized electron fluids with minimized numerical instabilities. A hyperbolic-system approach has been developed for robust computation of magnetized electron fluids, and the applicability of this approach to the coordinate system of E-field and E×B directions is investigated in this paper. The issue of magnetized electron fluid calculation is associated with the violation of diagonal dominance due to cross-diffusion terms. A test problem for the equation consisting of only cross-diffusion terms is computed by using the hyperbolic-system approach and the conventional approach using an elliptic equation. A stable computation is confirmed using the hyperbolic-system approach, and the second-order space accuracy is verified. On the other hand, the elliptic-equation approach suffers from a numerical instability if standard iterative methods are used. The converged solution is obtained only when an under-relaxation method for which the computational cost becomes large.

ホスト出版物のタイトルAIAA Aerospace Sciences Meeting
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
出版ステータスPublished - 2018
イベントAIAA Aerospace Sciences Meeting, 2018 - Kissimmee, United States
継続期間: 2018 1月 82018 1月 12


名前AIAA Aerospace Sciences Meeting, 2018


ConferenceAIAA Aerospace Sciences Meeting, 2018
国/地域United States

ASJC Scopus subject areas

  • 航空宇宙工学


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