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Title: Applications of large eddy simulation methods to gyrokinetic turbulence

The large eddy simulation (LES) approach—solving numerically the large scales of a turbulent system and accounting for the small-scale influence through a model—is applied to nonlinear gyrokinetic systems that are driven by a number of different microinstabilities. Comparisons between modeled, lower resolution, and higher resolution simulations are performed for an experimental measurable quantity, the electron density fluctuation spectrum. Moreover, the validation and applicability of LES is demonstrated through a series of diagnostics based on the free energetics of the system.
Authors:
;  [1] ;  [2] ;  [3] ;  [3] ;  [1] ;  [3] ;  [4] ;
  1. Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching (Germany)
  2. Applied Mathematics Research Centre, Coventry University, Coventry CV1 5FB (United Kingdom)
  3. (Germany)
  4. Max-Planck/Princeton Center for Plasma Physics, Princeton Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543 (United States)
Publication Date:
OSTI Identifier:
22251939
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCOUNTING; COMPARATIVE EVALUATIONS; ELECTRON DENSITY; FLUCTUATIONS; LARGE-EDDY SIMULATION; NONLINEAR PROBLEMS; RESOLUTION; SPECTRA; TURBULENCE; VALIDATION