论文标题
多纹理破坏的极端湍流事件的统计数据
Statistics of Extreme Turbulent Circulation Events from Multifractality Breaking
论文作者
论文摘要
高雷诺数流量在高雷诺数流动时极为强烈的循环波动的最新数值探索使湍流间歇性的新颖方面。与此类发展一起引入的涡流气体建模思想导致了对循环概率分布功能（CPDF）的核心和中间尾部的准确描述，以及与循环统计矩相关的缩放指数。我们通过强调湍流的涡流气体图像的预测范围，强调了多种纹理破裂（其显着的现象学成分之一）是披露CPDF尾巴的渐近形式的关键概念。与先前在激路循环间歇性方法的框架内得出的结果发现了一个显着的分析协议。
Recent numerical explorations of extremely intense circulation fluctuations at high Reynolds number flows have brought to light novel aspects of turbulent intermittency. Vortex gas modeling ideas, introduced alongside such developments, have led to accurate descriptions of the core and the intermediate tails of circulation probability distribution functions (cPDFs), as well as the scaling exponents associated to statistical moments of circulation. We extend the predictive reach of the vortex gas picture of turbulence, by emphasizing that multifractality breaking, one of its salient phenomenological ingredients, is the key concept to disclose the asymptotic form of cPDF tails. A remarkable analytical agreement is found with previous results derived within the framework of the instanton approach to circulation intermittency.
