间歇性
湍流
边界层
统计物理学
数学
层流
拉格朗日相干结构
物理
机械
数学分析
作者
Huaijin Yao,F. Alves Portela,George Papadakis
出处
期刊:Physical review fluids
[American Physical Society]
日期:2020-09-25
卷期号:5 (9)
被引量:5
标识
DOI:10.1103/physrevfluids.5.093902
摘要
The transition to turbulence from the perspective of second-order structure functions is analyzed. To separate the contributions from laminar and turbulent events, conditional sampling based on the local instantaneous intermittency is applied. New expressions are derived that decompose the structure functions to conditional-averaged quantities and elucidate the process of turbulent spot formation and penetration inside the boundary layer.
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