The global version of the gyrokinetic turbulence code GENE

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 non...

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Bibliographic Details
Published in:Journal of computational physics 2011-08, Vol.230 (18), p.7053-7071
Main Authors: Görler, T., Lapillonne, X., Brunner, S., Dannert, T., Jenko, F., Merz, F., Told, D.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BENCHMARKS
Computational techniques
Computer applications
COMPUTER CODES
COMPUTERIZED SIMULATION
ELECTRON TEMPERATURE
Electron temperatures
Energy
EQUATIONS
Exact sciences and technology
FORECASTING
G CODES
Gyrokinetics
INTEGRO-DIFFERENTIAL EQUATIONS
INTERPOLATION
Interpolation techniques
MATHEMATICAL METHODS AND COMPUTING
Mathematical methods in physics
Mathematical models
MATHEMATICAL SOLUTIONS
MATHEMATICAL SPACE
NONLINEAR PROBLEMS
Numerical models
Numerical simulations
NUMERICAL SOLUTION
PHASE SPACE
Physics
PLASMA
Plasma physics
PLASMA SIMULATION
Plasma turbulence
SIMULATION
SPACE
Temperature effects
TEMPERATURE GRADIENTS
THERMONUCLEAR REACTORS
Transport in plasmas
TRANSPORT THEORY
TURBULENCE
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Summary: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.
ISSN:0021-9991
1090-2716
DOI:10.1016/j.jcp.2011.05.034