Trapped gyro-Landau-fluid transport modeling of DIII-D hybrid discharges
Trapped gyro-Landau-fluid transport modeling of DIII-D hybrid discharges
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DOI：
10.1063/1.3523058
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发表时间：
2010-12
影响因子：
2.2
通讯作者：
J. Kinsey;G. Staebler;C. Petty
中科院分区：
文献类型：
--
作者：
J. Kinsey;G. Staebler;C. Petty
先前的工作总结了捕获离子和电子模式、离子和电子温度梯度（ETG）模式以及包括几何形状影响的电磁动力学气球模式驱动的湍流输运的捕获陀螺仪-朗道流体（TGLF）模型的物理和初步结果。近年来，实现了一种改进的碰撞模型，可以更精确地拟合非线性碰撞陀螺的传输数据库[J]。坎迪，R. E.华尔兹，J.康普特。[物理学报，186,545(2003)]长波长漂波湍流的模拟。新的碰撞模型对TGLF建模结果的影响尚不清楚。利用改进的TGLF模型，我们得到了与30 DIII-D [A]的离子和电子温度分布非常吻合的结果。Mahdavi和J. L. Luxon，聚变科学。[j] .科技导报，2011,(2)。输运结果表明，在离子能量输运接近的情况下，电子能量输运倾向于以短波长的ETG模式为主。
Previous work has summarized the physics and first results of benchmarking the trapped gyro-Landau-fluid (TGLF) model for turbulent transport driven by trapped ion and electron modes, ion and electron temperature gradient (ETG) modes, and electromagnetic kinetic ballooning modes including the effects of shaped geometry. Recently, an improved collision model was implemented which provides a more accurate fit to a transport database of nonlinear collisional GYRO [J. Candy and R. E. Waltz, J. Comput. Phys. 186, 545 (2003)] simulations of long wavelength driftwave turbulence. The impact of the new collision model on TGLF modeling results was unknown. Using the improved TGLF model we obtain excellent agreement with the ion and electron temperature profiles from 30 DIII-D [A. Mahdavi and J. L. Luxon, Fusion Sci. Technol. 48, 2 (2005)] hybrid discharges. The transport results show that the electron energy transport tends to be dominated by short wavelength ETG modes in cases where the ion energy transport approa...