Structure-preserving geometric particle-in-cell algorithm suppresses finite-grid instability -- Comment on "Finite grid instability and spectral fidelity of the electrostatic Particle-In-Cell algorithm'' by Huang et al

2019/04/01 by Jianyuan Xiao, Hong Qin, Xiao, Jianyuan +1
Engineering · #Computational Physics (physics.comp-ph) #Electrohydrodynamics and Fluid Dynamics #FOS: Physical sciences #Plasma Diagnostics and Applications #Plasma Physics (physics.plasm-ph) #Radiation Effects in Electronics

paper · pdf · doi:10.48550/arxiv.1904.00535

openalex publication_date 2019/04/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A recent paper by Huang et al. [Computer Physics Communications 207, 123 (2016)] thoroughly analyzed the Finite Grid Instability(FGI) and spectral fidelity of standard Particle-In-Cell (PIC) methods. Numerical experiments were carried out to demonstrate the FGIs for two PIC methods, the energy-conserving algorithm and the momentum-conserving algorithm. The paper also suggested that similar numerical experiments should be performed to test the newly developed Structure-Preserving Geometric (SPG)-PIC algorithm. In this comment, we supply the results of the suggested numerical experiments, which show that the SPG-PIC algorithm is able to suppress the FGI.

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