We discuss the application of stochastic intermittency fields to describe and analyse the statistical properties of time series of the generalised turbulence intensity in an anisotropic and inhomogeneous turbulent flow and provide a parsimonious description of the one-, two-, and three-point statistics. In particular, we show that the three-point correlations can be predicted from observed two-point statistics. Our analysis is motivated by observed stylised features of the energy dissipation in homogeneous and isotropic situations where these statistical properties are well represented within the framework of stochastic intermittency fields. We find a close resemblance and conclude that stochastic intermittency fields may be relevant in more general situations.

中文翻译：

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von Kármán 实验中的随机间歇场

我们讨论了应用随机间歇场来描述和分析各向异性和非均匀湍流中广义湍流强度时间序列的统计特性，并提供对单点、两点和三点统计的简洁描述。特别是，我们表明可以从观察到的两点统计中预测三点相关性。我们的分析受到在均匀和各向同性情况下观察到的能量耗散的程式化特征的推动，其中这些统计特性在随机间歇场的框架内得到了很好的表示。我们发现非常相似并得出结论，随机间歇场可能与更一般的情况相关。