Continuum self-organized-criticality model of turbulent heat transport in tokamaks.
Continuum self-organized-criticality model of turbulent heat transport in tokamaks.
复制标题
托卡马克中湍流热传输的连续自组织临界模型。
DOI：
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发表时间：
2003
影响因子：
8.6
通讯作者：
Raghvendra Singh
中科院分区：
文献类型：
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作者：
V. Tangri;A. Das;P. Kaw;Raghvendra Singh
提出了一个简单的一维连续介质驱动耗散系统模型来解释托卡马克中的自组织突发热输运。广泛的数值模拟，这个模型再现了当今托卡马克的许多功能，如亚边缘温度分布，间歇性运输事件，1/f缩放的频谱，传播锋等。这个模型利用了一组最小的唯象参数，这可能是从实验和/或模拟确定。分析和物理的理解所观察到的功能也已尝试。
A simple generic one-dimensional continuum model of driven dissipative systems is proposed to explain self-organized bursty heat transport in tokamaks. Extensive numerical simulations of this model reproduce many features of present day tokamaks such as submarginal temperature profiles, intermittent transport events, 1/f scaling of the frequency spectra, propagating fronts, etc. This model utilizes a minimal set of phenomenological parameters, which may be determined from experiments and/or simulations. Analytical and physical understanding of the observed features has also been attempted.