Effect of Edge Shear Flow on Radial Spreading of Ballooning Mode Turbulence

Ayumi TAKANO, Seiya NISHIMURA, Makoto Sasaki, Yusuke KOSUGA

研究成果: ジャーナルへの寄稿学術誌査読

抄録

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.

本文言語英語
ページ(範囲)1403016-1-1403016-8
ジャーナルPlasma and Fusion Research
19
DOI
出版ステータス出版済み - 2024
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学

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