Stable explicit coupling of the Yee scheme with a linear current model in fluctuating magnetized plasmas

Journal Article · Sat Aug 15 00:00:00 EDT 2015 · Journal of Computational Physics

DOI:https://doi.org/10.1016/J.JCP.2015.03.069· OSTI ID:22465639

Després, Bruno ^[1]; Heuraux, Stéphane ^[2]

---

1. Sorbonne Universités, UPMC Univ Paris 06, UMR 7598, Laboratoire Jacques-Louis Lions, F-75005, Paris (France)
2. Institut Jean Lamour, UMR 7198, CNRS – University Lorraine, Vandoeuvre (France)

This work analyzes the stability of the Yee scheme for non-stationary Maxwell's equations coupled with a linear current model with density fluctuations. We show that the usual procedure may yield unstable scheme for physical situations that correspond to strongly magnetized plasmas in X-mode (TE) polarization. We propose to use first order clustered discretization of the vectorial product that gives back a stable coupling. We validate the schemes on some test cases representative of direct numerical simulations of X-mode in a magnetic fusion plasma including turbulence.

• OSTI ID: 22465639
• Journal Information: Journal of Computational Physics, Vol. 295; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9991
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPUTERIZED SIMULATION
FLUCTUATIONS
MAGNETIZATION
MAXWELL EQUATIONS
PLASMA
PLASMA DENSITY
POLARIZATION
TURBULENCE