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New interpretation of specific sign of Reynolds stress in the boundary layer on a flat plate
Lin LM(林黎明); Wu YX(吴应湘)
发表期刊Theoretical & Applied Mechanics Letters
2018-11
卷号8期号:6页码:00
摘要

The specific sign of Reynolds stress in the boundary layer on a flat plate at zero incidence is newly interpreted in present paper based on the theory of vortex-induced vortex. It avoids some problems appeared in a traditional explanation, on the basis of relationship between mean and fluctuating flows due to the transport of momentum. Through the analysis of local flow field in the immediate neighborhood of wall, the characteristics of Reynolds stress are identified through introducing turbulence-induced small-scale streamwise eddies above the flat plate. The positive Reynolds stress is theoretically verified. And such new interpretation illustrates that the generation of Reynolds stress, as well as fluctuating velocity, is intrinsically independent of the mean flow. But its specific sign would be determined by the mean flow due to the inertial forces. Other features, such as the intensity relationship among three components of fluctuating velocity, are also presented.

关键词Reynolds Shear Stress Sign Boundary Layer Flat Plate Turbulence
收录类别CSCD
语种英语
论文分区二类
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/78190
专题流固耦合系统力学重点实验室
通讯作者Lin LM(林黎明)
推荐引用方式
GB/T 7714
Lin LM,Wu YX. New interpretation of specific sign of Reynolds stress in the boundary layer on a flat plate[J]. Theoretical & Applied Mechanics Letters,2018,8(6):00.
APA Lin LM,&Wu YX.(2018).New interpretation of specific sign of Reynolds stress in the boundary layer on a flat plate.Theoretical & Applied Mechanics Letters,8(6),00.
MLA Lin LM,et al."New interpretation of specific sign of Reynolds stress in the boundary layer on a flat plate".Theoretical & Applied Mechanics Letters 8.6(2018):00.
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