IMECH-IR  > 非线性力学国家重点实验室
Experimental study on spectrum and multi-scale nature of wall pressure and velocity in turbulent boundary layer
Zheng Xiao-Bo1; Jiang Nan1,2,3; Jiang, N (reprint author), Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China.
Source PublicationCHINESE PHYSICS B
2015-06-01
Volume24Issue:6Pages:64702
ISSN1674-1056
AbstractWhen 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.; 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.
KeywordMulti-scale Coherent Structures Hot Wire Anemometry Microphone Wavelet Transform
Subject AreaPhysics
DOI10.1088/1674-1056/24/6/064702
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000358130200042
WOS KeywordHIGH-REYNOLDS-NUMBER ; WAVELET REPRESENTATION ; STREAMWISE VORTICES ; SPATIAL-RESOLUTION ; DRAG REDUCTION ; FLUCTUATIONS ; FLOW ; BENEATH ; DECOMPOSITION
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding OrganizationNational Basic Research Program of China [2012CB720101, 2012CB720103] ; National Natural Science Foundation of China [11272233, 11332006, 11411130150]
Classification二类/Q2
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/55333
Collection非线性力学国家重点实验室
Corresponding AuthorJiang, N (reprint author), Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China.
Affiliation1.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
Recommended Citation
GB/T 7714
Zheng Xiao-Bo,Jiang Nan,Jiang, N . 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,&Jiang, N .(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.
Files in This Item: Download All
File Name/Size DocType Version Access License
J2015-005.pdf(3147KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zheng Xiao-Bo]'s Articles
[Jiang Nan]'s Articles
[Jiang, N (reprint author), Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zheng Xiao-Bo]'s Articles
[Jiang Nan]'s Articles
[Jiang, N (reprint author), Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zheng Xiao-Bo]'s Articles
[Jiang Nan]'s Articles
[Jiang, N (reprint author), Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: J2015-005.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.