Multigrid Particle-in-cell Simulations of Plasma Microturbulence

Lewandowski, J. L. V.

Princeton University. Plasma Physics Laboratory.

关键词: 10 Synthetic Fuels;    Electrostatics;    70 Plasma Physics And Fusion Technology;    Plasma Numerical Simulation;    Kinetics;   

DOI  :  10.2172/814681
RP-ID  :  PPPL-3823
RP-ID  :  AC02-76CH03073
RP-ID  :  814681

美国|英语

来源: UNT Digital Library

【 摘 要 】

A new scheme to accurately retain kinetic electron effects in particle-in-cell (PIC) simulations for the case of electrostatic drift waves is presented. The splitting scheme, which is based on exact separation between adiabatic and on adiabatic electron responses, is shown to yield more accurate linear growth rates than the standard df scheme. The linear and nonlinear elliptic problems that arise in the splitting scheme are solved using a multi-grid solver. The multi-grid particle-in-cell approach offers an attractive path, both from the physics and numerical points of view, to simulate kinetic electron dynamics in global toroidal plasmas.