Stationary spectrum of vorticity cascade in two-dimensional turbulence.

Stationary spectrum of vorticity cascade in two-dimensional turbulence.
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DOI：
10.1103/physreve.65.056305
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发表时间：
2002-05
期刊：
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子：
--
通讯作者：
C. Pasquero;G. Falkovich
C. Pasquero;G. Falkovich
中科院分区：
其他
文献类型：
--
作者：
C. Pasquero;G. Falkovich

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在数值模拟中观察到Kraichnan（1971）对二维湍流惯性范围内熵的直接级联的对数重整化预测。适度的分辨率允许很长时间的集成，从而提供很好的统计数据。在涡度概率分布中观察到偏离高斯性的现象。
The logarithmic renormalization predicted by Kraichnan (1971) for the direct cascade of enstrophy in the inertial range of two-dimensional turbulence has been observed in a numerical simulation. A moderate resolution allows for a very long time integration that provides very good statistics. Deviations from Gaussianity in the vorticity probability distribution are observed.