Nonlinear low noise particle-in-cell simulations of electron temperature gradient driven turbulence

被引：54

作者：

Bottino, A. ^{[1
]}

Peeters, A. G.

Hatzky, R.

Jolliet, S.

McMillan, B. F.

Tran, T. M.

Villard, L.

机构：

[1] IPP EURATOM Assoc, Max Planck Inst Plasma Phys, Garching, Germany

[2] IPP, Ctr Comp, Garching, Germany

[3] Max Planck Gesell, Garching, Germany

[4] Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, CH-1015 Lausanne, Switzerland

来源：

PHYSICS OF PLASMAS | 2007年 / 14卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1063/1.2428280

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：

In this Letter, it is shown that global, nonlinear, particle-in-cell (PIC) simulations of electron temperature driven turbulence recover the same level of transport as flux-tube codes when the level of statistical noise, associated with the PIC discretization, is sufficiently small. An efficient measure of the signal-to-noise ratio, applicable to every PIC code, is introduced. This diagnostic provides a direct measure of the quality of PIC simulations and allows for the validation of analytical estimates of the numerical noise. Global simulations for values of rho(*)(e)< 1/450 (normalized electron gyroradius) show no evidence of a gyro-Bohm scaling. (c) 2007 American Institute of Physics.

引用

页数：4

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