Statistical Analyses of Turbulent Particle and Momentum Fluxes in a Cylindrical Magnetized Plasma

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Author(s)

    • SASAKI Makoto
    • Research Institute for Applied Mechanics, Kyushu University|Itoh Research Center for Plasma Turbulence, Kyushu University
    • KASUYA Naohiro
    • Research Institute for Applied Mechanics, Kyushu University|Itoh Research Center for Plasma Turbulence, Kyushu University
    • YAGI Masatoshi
    • Itoh Research Center for Plasma Turbulence, Kyushu University|Japan Atomic Energy Agency
    • ITOH Kimitaka
    • Itoh Research Center for Plasma Turbulence, Kyushu University|National Institute for Fusion Science
    • NAGASHIMA Yoshihiko
    • Research Institute for Applied Mechanics, Kyushu University|Itoh Research Center for Plasma Turbulence, Kyushu University
    • INAGAKI Shigeru
    • Research Institute for Applied Mechanics, Kyushu University|Itoh Research Center for Plasma Turbulence, Kyushu University
    • ITOH Sanae-I.
    • Research Institute for Applied Mechanics, Kyushu University|Itoh Research Center for Plasma Turbulence, Kyushu University

Abstract

A nonlinear simulation of resistive drift wave turbulence in a cylindrical plasma is carried out. Long time evolution of turbulence with formation of a zonal flow is obtained for more than 1000 times of the typical drift wave period, which is sufficient for statistical analyses. Dynamical particle and momentum balance for the formation of the mean reveals that the radial turbulent fluxes are dominant contributors for the evolution of fluctuations. The particle flux is found to precede the momentum flux for 0.4 times of the typical drift wave period with large temporal variance. The analyses of the time series data of 3-D fields give the understanding of the dynamical structural formation mechanism.

Journal

  • Plasma and Fusion Research

    Plasma and Fusion Research 8(0), 2401113-2401113, 2013

    The Japan Society of Plasma Science and Nuclear Fusion Research

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