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Predicting Zonal Flows -- A Comprehensive Reynolds-Stress\n Response-Functional from First-Principles-Plasma-Turbulence Computations

2011/06/10 by Niels Guertler, Guertler, Niels, K. Hallatschek +1
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Fusion materials and technologies #Laser-Plasma Interactions and Diagnostics #Magnetic confinement fusion research #Plasma Physics (physics.plasm-ph)

paper · pdf · doi:10.48550/arxiv.1106.1963

openalex publication_date 2011/06/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Turbulence driven zonal flows play an important role in fusion devices since\nthey improve plasma confinement by limiting the level of anomalous transport.\nCurrent theories mostly focus on flow excitation but do not self-consistently\ndescribe the nearly stationary zonal flow turbulence equilibrium state.\nFirst-principles two-fluid turbulence studies are used to construct a Reynolds\nstress response functional from observations in turbulent states. This permits,\nfor the first time, a reliable charting of zonal flow turbulence equilibria.\n

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