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Turbulent Coherent Structure Study

明渠湍流在工程应用领域是一种重要流动形态，研究发现湍流是一系列有组织的流动结构即相关结构如条带结构、猝发现象、流向涡、横向涡等，正是此相干结构，承载动能的产生、维持及质量、能量、热量的传输。

湍流相干研究1.jpg

在对各种相干结构的运动模式、湍流中的动力学作用机制及主因分析，能量传递机制研究中，需使用高频PIV系统进行测量并得到二维流场时间序列，再结合统计学方法，得到湍流相干结构流动模式及流动模式与广义能量之间的关系。

湍流相干研究2.png

清华大学在研究二维明渠紊流实验中，应用高频PIV研究涡结构特征，分析各种相干结构流动模式在明渠湍流中的重要性以及相互关系。

湍流相干研究3.png


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