Gyrokinetic Large Eddy Simulations

Abstract

The Large Eddy Simulation (LES) 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 {\sc 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.

References in corpus (2)

• Gyrokinetic turbulence: a nonlinear route to dissipation through phase space
• Free energy cascade in gyrokinetic turbulence

Cited by in corpus (10)

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• Generalized universal instability: Transient linear amplification and subcritical turbulence
• Gyrokinetic GENE simulations of DIII-D near-edge L-mode plasmas
• Dynamic Procedure for Filtered Gyrokinetic Simulations
• Gyrokinetic turbulence: between idealized estimates and a detailed analysis of nonlinear energy transfers
• Sub-grid-scale effects in magnetised plasma turbulence
• Predicting the Z-pinch Dimits shift through gyrokinetic tertiary instability analysis of the entropy mode