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※ 半角英数字
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Benchmarking of global full-f gyrokinetic codes

大域的full-fジャイロ運動論コードのベンチマーク

朝比 祐一*; Garbet, X.*; 井戸村 泰宏  ; Grandgirard, V.*; Latu, G.*; Sarazin, Y.*; Dif-Pradalier, G.*; Donnel, P.*; Ehrlacher, C.*; Passeron, Ch.*

Asahi, Yuichi*; Garbet, X.*; Idomura, Yasuhiro; Grandgirard, V.*; Latu, G.*; Sarazin, Y.*; Dif-Pradalier, G.*; Donnel, P.*; Ehrlacher, C.*; Passeron, Ch.*

CEAおよび原子力機構で開発した2つの大域的full-fジャイロ運動論コードのベンチマークを実施した。イオン温度勾配駆動モードの線形安定性、帯状流の線形減衰、衝突性輸送といった線形過程については2つのコード間の定量的一致を確認した。非線形乱流シミュレーションの予備的なベンチマークでは境界条件や熱源モデル等の計算モデルの違いに起因する計算結果の違いを確認し、今後の定量的な非線形ベンチマークに向けた課題を明らかにした。

Two global full-f gyrokinetic codes, which have been developed at CEA and JAEA, are benchmarked. Quantitative agreements between two codes are obtained regarding linear processes such as the linear stability of ion temperature gradient driven modes, the linear damping of zonal flows, and the collisional transport. Preliminary benchmarks on nonlinear turbulence simulations show some differences of calculation results, which arise due to differences in calculation models such as boundary conditions and heat source models, and the remaining issues towards quantitative nonlinear benchmarks are clarified.

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