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Benchmark of gyrokinetic, kinetic MHD and gyrofluid codes for the linear calculation of fast particle driven TAE dynamics

A. Könies, S. Briguglio, N. Gorelenkov, T. Fehér, M. Isaev, Ph. Lauber, A. Mishchenko, D.A. Spong, Y. Todo, W.A. Cooper2018年被引用 43Nuclear FusionIF 3出版社

Fast particles in fusion plasmas may drive Alfvén modes unstable leading to fluctuations of the internal electromagnetic fields and potential loss of particles. Such instabilities can have an impact on the performance and the wall-load of machines with burning plasmas such as ITER. A linear benchmark for a toroidal Alfvén eigenmode (TAE) is done with 11 participating codes with a broad variation in the physical as well as the numerical models. A reasonable agreement of around 20% has been found for the growth rates. Also, the agreement of the eigenfunctions and mode frequencies is satisfying. However, they are found to depend strongly on the complexity of the used model.

日本語訳

核融合プラズマ中の高速粒子は、アルヴェンモードを不安定化させ、内部電磁場の変動や粒子の損失を引き起こす可能性がある。このような不安定性は、ITERのような燃焼プラズマを有する装置の性能と壁負荷に影響を及ぼし得る。トロイダル・アルヴェン固有モード(TAE)に対する線形ベンチマークが、物理モデルおよび数値モデルに幅広い多様性を持つ11の参加コードを用いて実施された。成長率については、約20%の妥当な一致が見られた。また、固有関数とモード周波数の一致も満足できるものであった。しかし、これらは使用されたモデルの複雑さに強く依存することが明らかになった。

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iter低精度(概要文一致)

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Fusion Advanced Studies TorusMagnetohydrodynamicsGyrokineticToroidal Alfvén Eigenmode
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