Convective cell dynamics in universal drift wave turbulence
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概要
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The interaction between the universal drift wave and the convective cell in the shearless slab geometry is investigated using a kinetic-fluid model based on nonlinear gyro-kinetic equations. It is found that the convective cell is nonlinearly excited in a way, which is similar to the zonal flow generation of ITG turbulence. On the other hand, if we introduce the large ion-ion collision effect, the zonal flow is damped and instead the streamer and finite ky modes are excited in the convective cell mode. As the result, the flux is larger than the one without collision. The forward cascade is observed in kz space and the forward/inverse cascade is observed in ky space in the time evolution of energy spectrum.
- 九州大学の論文
著者
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YAGI Masatoshi
Research Institute for Applied Mechanics, Kyushu University
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ITOH Sanae-I.
Research Institute for Applied Mechanics, Kyushu University
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Yagi Masatoshi
Research Instittue For Applied Mechanics Kyushu University
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SAITO Tsuyoshi
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
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Itoh Sanae-i.
Research Instittue For Applied Mechanics Kyushu University
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Saito Tsuyoshi
Interdisciplinary Graduate School Of Engineering Sciences Kyushu University
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