Experimental study on spectrum and multi-scale nature of wall pressure and velocity in turbulent boundary layer
文献类型：期刊论文
| 作者 | Zheng Xiao-Bo1; Jiang Nan1,2,3
|
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2015-06-01 |
| 卷号 | 24期号:6页码:64702 |
| 通讯作者邮箱 | nanj@tju.edu.cn |
| 关键词 | multi-scale coherent structures hot wire anemometry microphone wavelet transform |
| ISSN号 | 1674-1056 |
| 产权排序 | [Zheng Xiao-Bo; Jiang Nan] Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China; [Jiang Nan] Tianjin Key Lab Modern Engn Mech, Tianjin 300072, Peoples R China; [Jiang Nan] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Jiang, N (reprint author), Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China. |
| 中文摘要 | When using a miniature single sensor boundary layer probe, the time sequences of the stream-wise velocity in the turbulent boundary layer (TBL) are measured by using a hot wire anemometer. Beneath the fully developed TBL, the wall pressure fluctuations are attained by a microphone mechanism with high spatial resolution. Analysis on the statistic and spectrum properties of velocity and wall pressure reveals the relationship between the wall pressure fluctuation and the energy-containing structure in the buffer layer of the TBL. Wavelet transform shows the multi-scale natures of coherent structures contained in both signals of velocity and pressure. The most intermittent wall pressure scale is associated with the coherent structure in the buffer layer. Meanwhile the most energetic scale of velocity fluctuation at y(+) = 14 provides a specific frequency f(9) approximate to 147 Hz for wall actuating control with Re-tau = 996. |
| 英文摘要 | When using a miniature single sensor boundary layer probe, the time sequences of the stream-wise velocity in the turbulent boundary layer (TBL) are measured by using a hot wire anemometer. Beneath the fully developed TBL, the wall pressure fluctuations are attained by a microphone mechanism with high spatial resolution. Analysis on the statistic and spectrum properties of velocity and wall pressure reveals the relationship between the wall pressure fluctuation and the energy-containing structure in the buffer layer of the TBL. Wavelet transform shows the multi-scale natures of coherent structures contained in both signals of velocity and pressure. The most intermittent wall pressure scale is associated with the coherent structure in the buffer layer. Meanwhile the most energetic scale of velocity fluctuation at y(+) = 14 provides a specific frequency f(9) approximate to 147 Hz for wall actuating control with Re-tau = 996. |
| 学科主题 | Physics |
| 分类号 | 二类/Q2 |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | HIGH-REYNOLDS-NUMBER ; WAVELET REPRESENTATION ; STREAMWISE VORTICES ; SPATIAL-RESOLUTION ; DRAG REDUCTION ; FLUCTUATIONS ; FLOW ; BENEATH ; DECOMPOSITION |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.1088/1674-1056/24/6/064702 |
| 语种 | 英语 |
| WOS记录号 | WOS:000358130200042 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/55333]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China 2.Tianjin Key Lab Modern Engn Mech, Tianjin 300072, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng Xiao-Bo,Jiang Nan. Experimental study on spectrum and multi-scale nature of wall pressure and velocity in turbulent boundary layer[J]. CHINESE PHYSICS B,2015,24(6):64702. |
| APA | Zheng Xiao-Bo,&Jiang Nan.(2015).Experimental study on spectrum and multi-scale nature of wall pressure and velocity in turbulent boundary layer.CHINESE PHYSICS B,24(6),64702. |
| MLA | Zheng Xiao-Bo,et al."Experimental study on spectrum and multi-scale nature of wall pressure and velocity in turbulent boundary layer".CHINESE PHYSICS B 24.6(2015):64702. |
入库方式： OAI收割
来源：力学研究所
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