Coarse-graining the electron distribution in turbulence simulations of tokamak plasmas

被引：11

作者：

Chen, Yang ^{[1
]}

Parker, Scott E. ^{[1
]}

Rewoldt, Gregory ^{[2
]}

Ku, Seung-Hoe ^{[3
]}

Park, Gun-Young ^{[3
]}

Chang, C-S ^{[3
]}

机构：

[1] Univ Colorado, Boulder, CO 80309 USA

[2] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[3] NYU, New York, NY 10003 USA

来源：

PHYSICS OF PLASMAS | 2008年 / 15卷 / 05期

关键词：

Magnetic field effects - Plasma collision processes - Plasma simulation - Plasma turbulence - Shear flow - Thermal gradients;

D O I：

10.1063/1.2884040

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The coarse-graining procedure (CGP) [Y. Chen and S. E. Parker, Phys. Plasmas 14, 082301 (2007)] is implemented in the GEM code for electrons. While CGP introduces numerical dissipation in the particle-in-cell simulations, it is shown that CGP preserves physical dissipation effects such as the electron-ion collisional effects on the particle flux in ion-temperature-gradient driven turbulence. Kinetic simulation of an edge plasma is presented, which demonstrates the essential stabilizing effect of shear flow and the destabilizing effect of magnetic field perturbation in such a plasma. (C) 2008 American Institute of Physics.

引用

页数：8

共 16 条

[1] A δf particle method for gyrokinetic simulations with kinetic electrons and electromagnetic perturbations [J].