Influence of numerical schemes on statistical properties of computed charged particle trajectories in turbulent electromagnetic fields

JOURNAL OF COMPUTATIONAL PHYSICS

卷:241

Article

Lalescu, C. C.^1,2  Teaca, B.³  Carati, D.¹ 

[1] Univ Libre Brussels, B-1050 Brussels, Belgium

[2] Univ Craiova, Fac Phys, Craiova 200585, Romania

[3] Ecole Polytech Fed Lausanne, Sci Base, Ctr Rech Phys Plasmas, Stn 13, CH-1015 Lausanne, Switzerland

关键词: Spline interpolation;    Charged particle transport;    Turbulent electromagnetic fields;   

DOI  :  10.1016/j.jcp.2011.10.011

来源: Elsevier

【 摘 要 】

A class of numerical schemes is developed for the study of charged particle transport in complex stationary electromagnetic fields and tested for fields obtained from a numerical solution of the magneto-hydrodynamic equation. The performances of these schemes are evaluated by analyzing the conservation of energy and the statistical properties of the trajectories. Energy conservation is affected by the interpolation technique used to estimate the field value at the particle position. However, the particle transport properties are more robust, except in the limit of low energy when a significant fraction of the particles are trapped. (C) 2012 EURATOM-Belgian State. Published by Elsevier Inc. All rights reserved.

【 授权许可】

Free