Statistical analyses of turbulent particle and momentum fluxes in a cylindrical magnetized plasma

Makoto Sasaki; Naohiro Kasuya; Masatoshi Yagi; Kimitaka Itoh; Yoshihiko Nagashima; Shigeru Inagaki; Sanae I. Itoh

doi:10.1585/pfr.8.2401113

Statistical analyses of turbulent particle and momentum fluxes in a cylindrical magnetized plasma

Makoto Sasaki, Naohiro Kasuya, Masatoshi Yagi, Kimitaka Itoh, Yoshihiko Nagashima, Shigeru Inagaki, Sanae I. Itoh

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article

1 Citation (Scopus)

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.

Original language	English
Article number	2401113
Journal	Plasma and Fusion Research
Volume	8
DOIs	https://doi.org/10.1585/pfr.8.2401113
Publication status	Published - Jan 1 2013

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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Sasaki, M., Kasuya, N., Yagi, M., Itoh, K., Nagashima, Y., Inagaki, S., & Itoh, S. I. (2013). Statistical analyses of turbulent particle and momentum fluxes in a cylindrical magnetized plasma. Plasma and Fusion Research, 8, [2401113]. https://doi.org/10.1585/pfr.8.2401113

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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.",

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AU - Sasaki, Makoto

AU - Kasuya, Naohiro

AU - Yagi, Masatoshi

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AU - Nagashima, Yoshihiko

AU - Inagaki, Shigeru

AU - Itoh, Sanae I.

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