TY - JOUR
T1 - Analysis of Turbulence Driven Particle Transport in PANTA by Using Multi-Field Singular Value Decomposition
AU - Kodahara, Takumi
AU - Sasaki, Makoto
AU - Kawachi, Yuichi
AU - Jajima, Yuki
AU - Kobayashi, Tatsuya
AU - Yamada, Takuma
AU - Arakawa, Hiroyuki
AU - Fujisawa, Akihide
N1 - Publisher Copyright:
© 2023 The Japan Society of Plasma Science and Nuclear Fusion Research
PY - 2023
Y1 - 2023
N2 - Multi-field singular value decompositions (SVDs) is applied to turbulence obtained in a cylindrical magnetized plasma, PANTA. This method enables us to obtain the spatial mode structures with common temporal evolution of different physical quantities, such as the fluctuations of density and flows. Turbulence driven particle transport is evaluated by the method. It is shown that only the coupling of the same mode drives the transport, which stems from the orthogonality of the SVD. Thanks to this characteristics, the number of degrees of freedom which plays roles for the transport dynamics could be significantly reduced.
AB - Multi-field singular value decompositions (SVDs) is applied to turbulence obtained in a cylindrical magnetized plasma, PANTA. This method enables us to obtain the spatial mode structures with common temporal evolution of different physical quantities, such as the fluctuations of density and flows. Turbulence driven particle transport is evaluated by the method. It is shown that only the coupling of the same mode drives the transport, which stems from the orthogonality of the SVD. Thanks to this characteristics, the number of degrees of freedom which plays roles for the transport dynamics could be significantly reduced.
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U2 - 10.1585/PFR.18.1202036
DO - 10.1585/PFR.18.1202036
M3 - Article
AN - SCOPUS:85164250906
SN - 1880-6821
VL - 18
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
M1 - 1202036
ER -