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

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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [3] ;  [5]
  1. Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa (Portugal)
  2. CNRS, UMR 7598, Laboratoire Jacques-Louis Lions, F-75005, Paris (France)
  3. (France)
  4. Sorbonne Universités, UPMC Univ Paris 06, UMR 7598, Laboratoire Jacques-Louis Lions, F-75005, Paris (France)
  5. Institut Jean Lamour, UMR 7198, CNRS – University Lorraine, Vandoeuvre (France)
Publication Date:
OSTI Identifier:
22465639
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Computational Physics; Journal Volume: 295; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPUTERIZED SIMULATION; FLUCTUATIONS; MAGNETIZATION; MAXWELL EQUATIONS; PLASMA; PLASMA DENSITY; POLARIZATION; TURBULENCE