Analysis of Turbulence Driven Particle Transport in PANTA by Using Multi-Field Singular Value Decomposition

被引:0
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作者
Kodahara T. [1 ]
Sasaki M. [1 ]
Kawachi Y. [2 ]
Jajima Y. [1 ]
Kobayashi T. [2 ]
Yamada T. [3 ,4 ]
Arakawa H. [5 ]
Fujisawa A. [3 ,6 ]
机构
[1] College of Industrial Technology, Nihon University, Narashino
[2] National Institute for Fusion Science, Toki
[3] Research Center for Plasma Turbulence, Kyushu University, Kasuga
[4] Faculty of Arts and Science, Kyushu University, Fukuoka
[5] Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka
[6] Research Institute for Applied Mechanics, Kyushu University, Kasuga
关键词
data-driven method; drift wave; magnetized plasma; particle transport; singular value decomposition;
D O I
10.1585/PFR.18.1202036
中图分类号
学科分类号
摘要
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. © 2023 The Japan Society of Plasma Science and Nuclear Fusion Research
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