An unconditionally stable time-domain discretization on cartesian meshes for the simulation of nonuniform magnetized cold plasma

作者：Tierens Wouter^*; De Zutter Daniel

来源：Journal of Computational Physics, 2012, 231(15): 5144-5156.

DOI：10.1016/j.jcp.2012.04.028

• Cold plasma
• Time domain

In this paper an unconditionally stable, spatially and temporally implicit time-domain discretization for nonuniform magnetized cold plasma is developed. The discrete dispersion relation is free of spurious solutions and approximates the continuous dispersion relation for well-resolved wavelengths and frequencies (k Delta %26lt;%26lt; pi, omega Delta(t) %26lt;%26lt; pi). For a specific choice of parameters, the discrete dispersion relation approximates the continuous dispersion relation for all wavelengths and frequencies up to the Nyquist limit. A few examples, amongst them one involving mode conversion, illustrate the new method.

• 出版日期2012-6