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A comparison between a refined two-point model for the limited tokamak SOL and self-consistent plasma turbulence simulations

C Wersal, P Ricci, J Loizu2017年Plasma Physics and Controlled FusionIF 2.2出版社

A refined two-point model is derived from the drift-reduced Braginskii equations for the limited tokamak scrape-off layer (SOL) by balancing the parallel and perpendicular transport of plasma and heat and taking into account the plasma–neutral interaction. The model estimates the electron temperature drop along a field line, from a region far from the limiter to the limiter plates. Self-consistent first-principles turbulence simulations of the SOL plasma including its interaction with neutral atoms are performed with the GBS code and compared to the refined two-point model. The refined two-point model is shown to be in very good agreement with the turbulence simulation results.

日本語訳

洗練された二点モデルは、リミター付きトカマク・スクレイプオフ層(SOL)に対するドリフト低減ブラギンスキー方程式から、プラズマと熱の平行および垂直輸送のバランスを取り、プラズマ・中性粒子相互作用を考慮することによって導出される。このモデルは、リミターから遠い領域からリミター板に至るまでの磁力線に沿った電子温度降下を推定する。SOLプラズマの自己無撞着な第一原理乱流シミュレーションは、その中性原子との相互作用を含めてGBSコードを用いて実行され、洗練された二点モデルと比較される。洗練された二点モデルは、乱流シミュレーション結果と非常に良く一致することが示される。

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Scrape-off layerPlasma turbulence
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