A finite mass based method for Vlasov-Poisson simulations

被引：4
|
作者：
Larson, David J. [1 ]
Young, Christopher V. [2 ]
机构：
[1] Lawrence Livermore Natl Lab, AX Div, Livermore, CA 94550 USA
[2] Stanford Univ, Stanford Plasma Phys Lab, Stanford, CA 94305 USA
来源：
JOURNAL OF COMPUTATIONAL PHYSICS | 2015年 / 284卷
关键词：
Plasma simulation; Particle method; Vlasov equation; Remapping; Shape function; Compact support; PARTICLE-IN-CELL; MODEL; EQUATIONS; PLASMAS; FORCE; SIZE;
D O I：
10.1016/j.jcp.2014.12.022
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A method for the numerical simulation of plasma dynamics using discrete particles is introduced. The shape function kinetics (SFK) method is based on decomposing the mass into discrete particles using shape functions of compact support. The particle positions and shape evolve in response to internal velocity spread and external forces. Remapping is necessary in order to maintain accuracy and two strategies for remapping the particles are discussed. Numerical simulations of standard test problems illustrate the advantages of the method which include very low noise compared to the standard particle-in-cell technique, inherent positivity, large dynamic range, and ease of implementation. (C) 2014 Elsevier Inc. All rights reserved.
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页码：171 / 185
页数：15
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