Advances in validating gyrokinetic turbulence models against L- and H-mode plasmas a)
Advances in validating gyrokinetic turbulence models against L- and H-mode plasmas a)
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DOI：
10.1063/1.3574518
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发表时间：
2011-05
影响因子：
2.2
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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文献类型：
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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
预测湍流传输模型的稳健验证需要在多个级别上，在一系列物理相关条件下与实验测量进行定量比较。为此，在DIII-D托卡马克装置上进行了一系列精心设计的验证实验[J. L。Luxon，Nucl. Fusion 42，614（2002）]，以获得全面的多场、多点、多波数波动测量及其具有关键无量纲参数的定标。两个代表性的验证研究的结果：在束加热L-模式放电和电子加热功率扫描进行静态H-模式（QH-模式）放电中进行的伸长缩放研究。观察到伸长κ增加50%导致能量约束时间τe增加100%，并伴随波动水平的降低，定性地与先验理论预测和非线性GYRO一致[J. Candy和R. E.华尔兹，J.物理186，545（2003）]模拟.
Robust validation of predictive turbulent transport models requires quantitative comparisons to experimental measurements at multiple levels, over a range of physically relevant conditions. Toward this end, a series of carefully designed validation experiments has been performed on the DIII-D tokamak [J. L. Luxon, Nucl. Fusion 42, 614 (2002)] to obtain comprehensive multifield, multipoint, multiwavenumber fluctuation measurements and their scalings with key dimensionless parameters. The results of two representative validation studies are presented: an elongation scaling study performed in beam heated L-mode discharges and an electron heating power scan performed in quiescent H-mode (QH-mode) discharges. A 50% increase in the elongation κ is observed to lead to a ∼50% increase in energy confinement time τe and accompanying decrease in fluctuation levels, qualitatively consistent with a priori theoretical predictions and nonlinear GYRO [J. Candy and R. E. Waltz, J. Comput. Phys. 186, 545 (2003)] simulation...