Gyrokinetic studies of core turbulence features in ASDEX Upgrade H-mode plasmas
Gyrokinetic studies of core turbulence features in ASDEX Upgrade H-mode plasmas
复制标题
ASDEX Upgrade H 模式等离子体中核心湍流特征的回旋运动研究
DOI：
10.1063/1.4919022
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发表时间：
2015
影响因子：
2.2
通讯作者：
The Asdex Upgrade Team
中科院分区：
文献类型：
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作者：
A. Navarro;T. Happel;T. Goerler;F. Jenko;J. Abiteboul;A. Bustos;H. Doerk;D. Told;The Asdex Upgrade Team
陀螺动力学验证研究是至关重要的发展信心的模型纳入数值模拟，从而提高其预测能力。作为这个方向的一步，我们模拟ASDEX升级与GENE代码放电，并分析各种波动量，并将它们与实验测量值进行比较。采取的办法如下。首先，进行线性模拟，以确定湍流状态。其次，在非线性模拟的热通量匹配实验通量通过改变对数离子温度梯度内预期的实验误差酒吧。最后，详细分析了各参量与离子温度梯度的关系。它被发现，密度和温度的波动可以显着变化，在这个参数的微小变化，从而与实验比较非常敏感的实验配置文件中的不确定性。然而，交叉相位是更强大的，这表明他们是更好的观测陀螺动力学模拟和实验测量之间的比较。
Gyrokinetic validation studies are crucial for developing confidence in the model incorporated in numerical simulations and thus improving their predictive capabilities. As one step in this direction, we simulate an ASDEX Upgrade discharge with the GENE code, and analyze various fluctuating quantities and compare them to experimental measurements. The approach taken is the following. First, linear simulations are performed in order to determine the turbulence regime. Second, the heat fluxes in nonlinear simulations are matched to experimental fluxes by varying the logarithmic ion temperature gradient within the expected experimental error bars. Finally, the dependence of various quantities with respect to the ion temperature gradient is analyzed in detail. It is found that density and temperature fluctuations can vary significantly with small changes in this parameter, thus making comparisons with experiments very sensitive to uncertainties in the experimental profiles. However, cross-phases are more robust, indicating that they are better observables for comparisons between gyrokinetic simulations and experimental measurements.
影响因子：
2.2
作者：
C. Holland;L. Schmitz;T. Rhodes;W. Peebles;J. Hillesheim;Gang Wang;L. Zeng;E. Doyle;Sterling P. Smith;R. Prater;K. Burrell;J. Candy;R. Waltz;J. Kinsey;G. Staebler;J. Deboo;C. Petty;G. McKee;Zheng Yan;A. White
通讯作者：
C. Holland;L. Schmitz;T. Rhodes;W. Peebles;J. Hillesheim;Gang Wang;L. Zeng;E. Doyle;Sterling P. Smith;R. Prater;K. Burrell;J. Candy;R. Waltz;J. Kinsey;G. Staebler;J. Deboo;C. Petty;G. McKee;Zheng Yan;A. White
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