Effect of Edge Shear Flow on Radial Spreading of Ballooning Mode Turbulence
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- TAKANO Ayumi
- Department of Electric and Electronic Engineering, Hosei University
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- NISHIMURA Seiya
- National Institute for Quantum Science and Technology
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- SASAKI Makoto
- College of Industrial Technology, Nihon University
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- KOSUGA Yusuke
- Research Institute for Applied Mechanics, Kyushu University
Description
<p>Turbulent transport by the ballooning mode in tokamak plasmas with edge pedestals is simulated using a reduced set of two-fluid equations. In the absence of the equilibrium poloidal flow, global heat transport by the secondary nonlinear evolution of the resistive ballooning mode turbulence is observed. By examining the effect of the edge shear flow, the global heat transport is suppressed to be almost half, if the edge shear flow is strong enough. A detailed analysis on the radial profile and the poloidal spectrum of the heat flux is newly performed. It is revealed that such confinement improvement is caused by the suppression of the formation of streamer structures that lead to the strong convective heat transport.</p>
Journal
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- Plasma and Fusion Research
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Plasma and Fusion Research 19 (0), 1403016-1403016, 2024-03-20
The Japan Society of Plasma Science and Nuclear Fusion Research
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Keywords
Details 詳細情報について
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- CRID
- 1390862623773924480
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- ISSN
- 18806821
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- OpenAIRE
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- Abstract License Flag
- Disallowed