Applications of Large Eddy Simulation methods to gyrokinetic turbulence

Abstract

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.

14 pages, 9 figures

References in corpus (2)

• Gyrokinetic turbulence: a nonlinear route to dissipation through phase space
• The energetic coupling of scales in gyrokinetic plasma turbulence

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