The global version of the gyrokinetic turbulence code GENE

JOURNAL OF COMPUTATIONAL PHYSICS

卷:230

Article

Goerler, T.¹  Lapillonne, X.²  Brunner, S.²  Dannert, T.³  Jenko, F.¹  Merz, F.¹  Told, D.¹ 

[1] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany

[2] Ecole Polytech Fed Lausanne, CRPP, CH-1015 Lausanne, Switzerland

[3] Max Planck Gesell, Rechenzentrum, D-85748 Garching, Germany

关键词: Plasma turbulence;    Transport in plasmas;    Gyrokinetics;    Plasma simulation;   

DOI  :  10.1016/j.jcp.2011.05.034

来源: Elsevier

【 摘 要 】

The understanding and prediction of transport due to plasma microturbulence is a key open problem in modern plasma physics, and a grand challenge for fusion energy research. Ab initio simulations of such small-scale, low-frequency turbulence are to be based on the gyrokinetic equations, a set of nonlinear integro-differential equations in reduced (five-dimensional) phase space. In the present paper, the extension of the well-established and widely used gyrokinetic code GENE [F. Jenko, W. Dorland, M. Kotschenreuther, B.N. Rogers, Electron temperature gradient driven turbulence, Phys. Plasmas 7 (2000) 1904-1910] from a radially local to a radially global (nonlocal) version is described. The necessary modifications of both the basic equations and the employed numerical methods are detailed, including, e.g., the change from spectral methods to finite difference and interpolation techniques in the radial direction and the implementation of sources and sinks. In addition, code verification studies and benchmarks are presented. (C) 2011 Elsevier Inc. All rights reserved.

【 授权许可】

Free