| Study on Reynolds stress transportation in a turbulent channel flow with spanwise oscillating wall | |
| Huang, WX ; Xu, CX ; Cui, GX ; Zhang, ZS | |
| 2010-05-10 ; 2010-05-10 | |
| 会议名称 | RECENT ADVANCES IN FLUID MECHANICS ; 4th International Conference on Fluid Mechanics ; Dalian, PEOPLES R CHINA ; Web of Science |
| 关键词 | wall oscillation drag reduction wall turbulence Mechanics |
| 中文摘要 | An investigation of a turbulent channel flow subjected to spanwise wall oscillation is carried out via direct numerical simulation. By wall oscillation, turbulence is suppressed and friction drag is reduced. The transportation of Reynolds stresses under the influence of the oscillating wall is analyzed at the initial and statistically stationary stages to further disclose the mechanism of turbulence suppression and drag reduction. It is found that the moving wall can cause the transient growth of spanwise velocity fluctuations only at the very beginning of wall oscillation and thereafter the pressure-strain terms play an important role. The attenuation of turbulence intensities and skin friction at the statistically stationary stage is mainly due to the sustained reduction of the pressure-strain terms. |
| 会议录出版者 | TSINGHUA UNIVERSITY PRESS ; BEIJING ; TSINGHUA UNIVERSITY HAIDIANQU, BEIJING 100084, PEOPLES R CHINA |
| 语种 | 英语 ; 英语 |
| 内容类型 | 会议论文 |
| 源URL | [http://hdl.handle.net/123456789/18991]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Huang, WX,Xu, CX,Cui, GX,et al. Study on Reynolds stress transportation in a turbulent channel flow with spanwise oscillating wall[C]. 见:RECENT ADVANCES IN FLUID MECHANICS, 4th International Conference on Fluid Mechanics, Dalian, PEOPLES R CHINA, Web of Science. |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论