Flow helicity of wavy plasma turbulence

Y. Kosuga; M. Sasaki; Z. B. Guo

doi:10.1063/1.5121351

Flow helicity of wavy plasma turbulence

Y. Kosuga, M. Sasaki, Z. B. Guo

核融合力学部門

研究成果: Contribution to journal › Article › 査読

1 被引用数 (Scopus)

抄録

The helicity of flow field is an important quantity for describing the topological feature of turbulent fluids and plasmas. In this work, we discuss how helicity is determined in turbulent plasmas, by considering the drift wave turbulence and the parallel velocity gradient driven turbulence as concrete examples. Helicity evolution for each turbulence is derived and compared against the simulation data. Links between the plasma helicity and the transport channels, such as particle transport and momentum transport, are demonstrated. Several applications including the excitation of the 3D flow patterns in fusion plasmas and dynamo action in astrophysical plasmas are discussed.

本文言語	英語
論文番号	022303
ジャーナル	Physics of Plasmas
巻	27
号	2
DOI	https://doi.org/10.1063/1.5121351
出版ステータス	出版済み - 2 1 2020

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.5121351

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引用スタイル

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abstract = "The helicity of flow field is an important quantity for describing the topological feature of turbulent fluids and plasmas. In this work, we discuss how helicity is determined in turbulent plasmas, by considering the drift wave turbulence and the parallel velocity gradient driven turbulence as concrete examples. Helicity evolution for each turbulence is derived and compared against the simulation data. Links between the plasma helicity and the transport channels, such as particle transport and momentum transport, are demonstrated. Several applications including the excitation of the 3D flow patterns in fusion plasmas and dynamo action in astrophysical plasmas are discussed.",

author = "Y. Kosuga and M. Sasaki and Guo, {Z. B.}",

note = "Funding Information: We thank the stimulating discussions with S. Inagaki, K. Terasaka, F. Kin, S.-I. Itoh, K. Itoh, P. H. Diamond, and the participants in the Festival de Theorie. This work is partly supported by the Grants-in-Aid for Scientific Research of the JSPS of Japan (Nos. JP18K03578, JP15H02155, and JP17H06089), the joint research project in RIAM, and the National MCF Energy R&D Program (No. 2018YFE0311400) of China. Publisher Copyright: {\textcopyright} 2020 Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

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AU - Guo, Z. B.

N1 - Funding Information: We thank the stimulating discussions with S. Inagaki, K. Terasaka, F. Kin, S.-I. Itoh, K. Itoh, P. H. Diamond, and the participants in the Festival de Theorie. This work is partly supported by the Grants-in-Aid for Scientific Research of the JSPS of Japan (Nos. JP18K03578, JP15H02155, and JP17H06089), the joint research project in RIAM, and the National MCF Energy R&D Program (No. 2018YFE0311400) of China. Publisher Copyright: © 2020 Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

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N2 - The helicity of flow field is an important quantity for describing the topological feature of turbulent fluids and plasmas. In this work, we discuss how helicity is determined in turbulent plasmas, by considering the drift wave turbulence and the parallel velocity gradient driven turbulence as concrete examples. Helicity evolution for each turbulence is derived and compared against the simulation data. Links between the plasma helicity and the transport channels, such as particle transport and momentum transport, are demonstrated. Several applications including the excitation of the 3D flow patterns in fusion plasmas and dynamo action in astrophysical plasmas are discussed.

AB - The helicity of flow field is an important quantity for describing the topological feature of turbulent fluids and plasmas. In this work, we discuss how helicity is determined in turbulent plasmas, by considering the drift wave turbulence and the parallel velocity gradient driven turbulence as concrete examples. Helicity evolution for each turbulence is derived and compared against the simulation data. Links between the plasma helicity and the transport channels, such as particle transport and momentum transport, are demonstrated. Several applications including the excitation of the 3D flow patterns in fusion plasmas and dynamo action in astrophysical plasmas are discussed.

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