Adaptive particle management in a particle-in-cell code

被引：50

作者：

Welch, D. R. ^{[1
]}

Genoni, T. C. ^{[1
]}

Clark, R. E. ^{[1
]}

Rose, D. V. ^{[1
]}

机构：

[1] Voss Sci, LLC, Albuquerque, NM 87108 USA

来源：

JOURNAL OF COMPUTATIONAL PHYSICS | 2007年 / 227卷 / 01期

关键词：

numerical methods; particle-in-cell; plasma simulation; gas breakdown;

D O I：

10.1016/j.jcp.2007.07.015

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In particle-based plasma simulation, when dealing with source terms such as ionization, emission from boundaries, etc., the total number of particles can grow, at times, exponentially. Problems involving the spatial expansion of dynamic plasmas can result in statistical under representation of particle distributions in critical regions. Furthermore, when considering mode optimization for massively parallel operation, it is useful to maintain a uniform number of particles per cell. Accordingly, we have developed an algorithm for coalescing or fissioning particles on 2D and 3D orthogonal grids that is based on the method of Assous et al. [F. Assous, T. Pougeard Dulimbert, J. Segre, J. Comput. Phys. 187 (2003) 550]. We present the algorithm and describe in detail its application to particle-in-cell simulations of gas ionization/streamer formation and dynamic, expanding plasmas.(C) 2007 Elsevier Inc. All rights reserved.

引用

页码：143 / 155

页数：13

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