2D turbulence structure observed by a fast framing camera system in linear magnetized device PANTA

10th Asia Plasma and Fusion Association Conference

Ohdachi, Satoshi^2,3 ; Inagaki, Shigeru^1 ; Kobayashi, Tatsuya^2,3 ; Goto, Motoshi^2,3

Research Institute for Applied Mechanics, Kyushu University, Kasuga-shi, Fukuoka-ken, Japan^1

National Institute for Fusion Science, Toki-shi, Gifu-ken, Japan^2

SOKENDAI, Graduate University for Advanced Studies, Toki-shi, Gifu-ken, Japan^3

关键词: 2D turbulence;    Density fluctuation;    Fast framing camera system;    Fourier-Bessel expansion;    High speed camera systems;    Mode number;    Phase relation;    Two dimensional turbulence;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/823/1/012009/pdf
DOI  :  10.1088/1742-6596/823/1/012009

来源: IOP

【 摘 要 】

Two dimensional turbulence observed in the linear magnetized device PANTA is studied using a visible high speed camera system. When the fluctuation component are decomposed with Fourier-Bessel expansion, complex density fluctuations are recognized as the superposition of the several mode having low mode number, e.g., m = 1, 2, and 3. The phase relations between waves indicate that they are non-linearly coupled.