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Statistical induction of a thermal transport model based on the transport analyses database

M. Yokoyama2019年被引用 2Nuclear FusionIF 3出版社

A new approach for inducing a thermal transport model, of ion heat diffusivity as an example, for magnetically confined high-temperature plasmas has been further pursued after its initial proposal by Yokoyama (2014 Plasma Fusion Res. 9 1302137). It has been based on a statistical approach utilizing the accumulated experimental transport analyses database. Two approaches are described in this paper: (1) placing a priority on reproducing the ion heat diffusivity with higher accuracy for better reproduction of ion temperature profiles, and (2) attempting to acquire a physics interpretation through variable selections and the dependence of the ion heat diffusivity on them. Such progress will foster the study of a practical transport model for real-time control and the provision for guidance to the parameter dependence to be pursued by large-scale cutting-edge simulations.

日本語訳

磁場閉じ込め高温プラズマにおける熱輸送モデルを誘導するための新しいアプローチが、イオン熱拡散係数を例として、当初の提案に続いてさらに追求されてきた。このアプローチは、蓄積された実験的輸送解析データベースを活用した統計的手法に基づいている。本論文では2つのアプローチについて述べる:(1) イオン温度分布の再現精度を高めるために、イオン熱拡散係数の再現を優先すること、および(2) イオン熱拡散係数の変数依存性を通じた物理的解釈の獲得を試みることである。このような進展は、実時間制御のための実用的な輸送モデルの研究と、大規模最先端シミュレーションによるパラメータ依存性の指針の提供を促進するものである。

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