Alpha Effect and Hydrodynamical Helicity of Anisotropic Turbulence in Reversed Field Pinch
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概要
- 論文の詳細を見る
Turbulence caused by high plasma current in reversed field pinch (RFP) organizes the reversed toroidal magnetic field near the wall. Bessel function model (BFM) provides the clear and elegant explanation of the global feature of the relaxation of the turbulent discharge. BFM is constructed by alpha and beta effects which are familiar in the study of the Earth's magnetic field. Especially, alpha effect is important to cause and sustain the reversed magnetic field. On the other hand, numerical simulation has been advanced to investigate the relaxation process. We check the alpha effect in a three-dimensional resistive magnetohydrodynamical (MHD) simulation of RFP. We found that the helicity of the flow perpendicular to the mean magnetic field dominates the alpha effect rather than the ordinal hydrodynamical helicity for the anisotropic turbulence like RFP. This extension is supported by quasi-linear theory.
- 社団法人日本物理学会の論文
- 1995-12-15
著者
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Koide Shinji
Laboratory Of Plasma Astrophysics And Fusion Science Faculty Of Engineering Toyama University
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Koide Shinji
Laboratory For Plasma Astrophysics And Fusion Science Department Of Electronics And Information Facu
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Nishikawa Ken-ichi
Department of Physics and Astronomy, University of Iowa
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Nishikawa Ken-ichi
Department Of Physics And Astronomy University Of Iowa
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Nishikawa Ken-ichi
Department Of Applied Chemistry Faculty Of Engineering Osaka University
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