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Reduced Vlasov simulations in higher dimensions

机译:在更高维度上减少了Vlasov模拟

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Kinetic plasma simulations based on direct integration of the Vlasov equations are characterized by very low noise, but become numerically intensive in more than one spatial dimension. A set of less costly numerical strategies are presented in which a full Vlasov kinetic description is maintained only along one "dominant" spatial coordinate, with the perpendicular dimensions modeled by reduced moment-based methods. A simple initial-value simulation is use to test the algorithm and simulations of current-driven double layers and electron holes in the auroral ionosphere are used to illustrate the application of such methods to current research studies. (C) 2004 Elsevier B.V. All rights reserved.
机译:基于Vlasov方程的直接积分的动力学等离子体模拟的特点是噪声极低,但在多个空间维度上变得数值密集。提出了一套成本较低的数值策略,其中仅沿一个“主要”空间坐标保持完整的Vlasov动力学描述,并通过基于减矩的方法对垂直尺寸进行建模。使用简单的初始值模拟来测试算法,并通过模拟极光电离层中电流驱动的双层和电子空穴来说明这种方法在当前研究中的应用。 (C)2004 Elsevier B.V.保留所有权利。

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