Experimental study on spectrum and multi-scale nature of wall pressure and velocity in turbulent boundary layer

CORC > 力学研究所 > 中国科学院力学研究所 > 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-Bo 1; Jiang Nan1,2,3
刊名	CHINESE PHYSICS B
	2015-06-01
通讯作者邮箱	nanj@tju.edu.cn
卷号	24 期号:6 页码:64702
关键词	multi-scale coherent structures hot wire anemometry microphone wavelet transform
ISSN号	1674-1056
通讯作者	Jiang, N (reprint author), Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China.
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
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
内容类型	期刊论文
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.