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:372-377 |
ISSN | 2095-0349 |
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 |
CSCD记录号 | CSCD:6407075 |
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,:372-377. |
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),372-377. |
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):372-377. |
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