Exact charge conservation scheme for Particle-in-Cell simulation with an arbitrary form-factor

被引：403

作者：

Esirkepov, TZ ^{[1
]}

机构：

[1] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia

来源：

COMPUTER PHYSICS COMMUNICATIONS | 2001年 / 135卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

Particle-in-Cell method; continuity equation; charge conservation;

D O I：

10.1016/S0010-4655(00)00228-9

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The new method of local electric current density assignment in the Particle-in-Cell code in Cartesian geometry is presented. The method is valid for an arbitrary quasi-particle form-factor assuming that quasi-particle trajectory over time step is a straight line. The method allows one to implement the PIC code without solving Poisson equation. The presented formula for the current density associated with the motion of a single quasi-particle is the unique linear combination of form-factor differences in consistency with the discrete continuity equation. The computation scheme is demonstrated in 20D and 3D. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：144 / 153

页数：10

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