Heat Transport Analyses

  • SHIRAI Hiroshi
    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute

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Other Title
  • トロイダルプラズマ輸送解析の基礎  3.熱輸送解析
  • 講座 トロイダルプラズマ輸送解析の基礎(3)熱輸送解析
  • コウザ トロイダルプラズマ ユソウ カイセキ ノ キソ 3 ネツ ユソウ カイセキ

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Abstract

Methods for heat transport analysis and heat transport simulation in toroidal plasmas are summarized on the basis of an energy balance equation. Joule heating, NBI heating, RF heating, and α heating are briefly explained. Among the energy loss mechanisms, the conduction loss and the radiation loss dominate in the core region and the peripheral region, respectively. In tokamaks, microturbulence causes anomalous transport, which is much larger than neoclassical transport. The other mechanisms of enhanced transport, sawtooth oscillation and magnetic island formation, are also shown.

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