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arXiv 2209.09683physics.plasm-ph
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JET混合H模式下ETG turbulence的综合建模和多尺度陀螺动力学验证研究

Integrated modelling and multiscale gyrokinetic validation study of ETG turbulence in a JET hybrid H-mode scenario

J Citrin, S Maeyama, C Angioni, N Bonanomi, C Bourdelle, F. J Casson, E Fable, T Goerler, P Mantica, A Mariani, M Sertoli, G Staebler, T Watanabe, JET Contributors

摘要:

以前的研究与第一原理为基础的综合建模表明,ETG湍流可能会导致反GyroBohm同位素缩放在JET高性能混合H模式的情况下。一项针对高保真湍流模型的专门比较研究证实了这一说法。包含磁场扰动的离子尺度湍流可以在温度梯度误差范围内匹配功率平衡通量。多尺度gyrokinetic模拟从两个不同的代码产生没有显着的ETG热通量,表明简单的经验法则是不够的标准,其发病。

英文摘要:

Previous studies with first-principle-based integrated modelling suggested that ETG turbulence may lead to an anti-GyroBohm isotope scaling in JET high-performance hybrid H-mode scenarios. A dedicated comparison study against higher-fidelity turbulence modelling invalidates this claim. Ion-scale turbulence with magnetic field perturbations included, can match the power balance fluxes within temperature gradient error margins. Multiscale gyrokinetic simulations from two distinct codes produce no significant ETG heat flux, demonstrating that simple rules-of-thumb are insufficient criteria for its onset.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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