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重庆交通大学学报（自然科学版） 2009

边壁剪切流若干特性研究

DOI: 10.3969/j.issn.1674-0696.2009.06.28, PP. 1083-1087

刘兆存,范玮佳

Keywords: 剪切湍流,能量分配,拟序结构,湍流封闭性,shearflow,energydistribution,coherentstructure,turbulentclosure

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Abstract:

:？分析了壁面剪切流的流动特性及计算内部能量间的分配关系,研究了层流、湍流的流动特性和层流到湍流转捩的特点,讨论了剪切流的一般机理。指出能量传递和不同阶段的不同结构有关,能量耗散和扩散与共振和锁频密切相联系。研究表明,湍流从本质上看是一种局部现象并且具有对称破缺的特性。

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