Bringing global gyrokinetic turbulence simulations to the transport timescale using a multiscale approach

Abstract

The vast separation dividing the characteristic times of energy confinement and turbulence in the core of toroidal plasmas makes first-principles prediction on long timescales extremely challenging. Here we report the demonstration of a multiple-timescale method that enables coupling global gyrokinetic simulations with a transport solver to calculate the evolution of the self-consistent temperature profile. This method, which exhibits resiliency to the intrinsic fluctuations arising in turbulence simulations, holds potential for integrating nonlocal gyrokinetic turbulence simulations into predictive, whole-device models.

arXiv comment7 pages, 3 figures

References in corpus (1)

• Direct multiscale coupling of a transport code to gyrokinetic turbulence codes

Cited by in corpus (4)

• Global gyrokinetic simulations of ASDEX Upgrade up to the transport time-scale with GENE-Tango
• First-principles based plasma profile predictions for optimized stellarators
• Core transport barriers induced by fast ions in global gyrokinetic GENE simulations
• Investigation of a Multiple-Timescale Turbulence-Transport Coupling Method in the Presence of Random Fluctuations