Gyrokinetic large eddy simulations

被引:20
|
作者
Morel, P. [1 ]
Navarro, A. Banon [1 ]
Albrecht-Marc, M. [1 ]
Carati, D. [1 ]
Merz, F. [2 ]
Goerler, T. [2 ]
Jenko, F. [2 ]
机构
[1] Univ Libre Bruxelles, Stat & Plasma Phys Lab, B-1050 Brussels, Belgium
[2] Max Planck Inst Plasma Phys, D-85748 Garching, Germany
关键词
GRADIENT-DRIVEN TURBULENCE; FLOWS; DISSIPATION; VISCOSITY; PHYSICS; MODELS;
D O I
10.1063/1.3601053
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 large eddy simulation approach is adapted to the study of plasma microturbulence in a fully three-dimensional gyrokinetic system. Ion temperature gradient driven turbulence is studied with the GENE code for both a standard resolution and a reduced resolution with a model for the sub-grid scale turbulence. A simple dissipative model for representing the effect of the sub-grid scales on the resolved scales is proposed and tested. Once calibrated, the model appears to be able to reproduce most of the features of the free energy spectra for various values of the ion temperature gradient. (C) 2011 American Institute of Physics. [doi:10.1063/1.3601053]
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页数:9
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