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Experimental investigation of Reynolds stress complex eddy viscosity model for coherent structure dynamics
Jia YX; Tang ZQ; Jiang N(姜楠); Jiang, N (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100080, Peoples R China
Source PublicationScience China-Physics Mechanics & Astronomy
2011
Volume54Issue:7Pages:1319-1327
ISSN1674-7348
AbstractTime sequence signals of streamwise and normal velocity components, as well as velocity strain rate, at different vertical locations in the turbulent boundary layer over a smooth flat plate in a wind tunnel have been finely examined by the use of double-sensor hot-wire anemometry. The local module maximum for wavelet coefficient of longitudinal velocity component, as a detecting index, is employed to educe the ejection and sweep process of the coherent structure burst in the turbulent boundary layer from the random fluctuating background. The coherent waveforms of Reynolds stress residual contribution term for random fluctuations to coherent structure, as well as the velocity strain rate of coherent structure, are extracted by the conditional phase average technique. Based on the theoretical analysis of eddy viscosity coefficient in complex eddy viscosity model for coherent structure, the macro-relaxation effect between Reynolds stress residual contribution term of random fluctuations to coherent structure and the velocity strain rate of coherent structure is studied and the variations of the phase difference between them across the turbulent boundary layer are investigated experimentally. The rationality of complex eddy viscosity model for coherent structure is confirmed through the investigation.
KeywordTurbulent Boundary Layer Coherent Structure Complex Eddy Viscosity Model Reynolds Stress Phase Difference Turbulent-boundary-layer Wave
Subject AreaPhysics
DOI10.1007/s11433-011-4370-5
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000291951500026
WOS KeywordTURBULENT-BOUNDARY-LAYER ; WAVE
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding OrganizationThis work was jointly supported by the National Natural Science Foundation of China (Grant Nos. 10832001 and 10872145), and Opening Subject of State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences.
Classification二类/Q3
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44920
Collection非线性力学国家重点实验室
Corresponding AuthorJiang, N (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Jia YX,Tang ZQ,Jiang N,et al. Experimental investigation of Reynolds stress complex eddy viscosity model for coherent structure dynamics[J]. Science China-Physics Mechanics & Astronomy,2011,54(7):1319-1327.
APA Jia YX,Tang ZQ,姜楠,&Jiang, N .(2011).Experimental investigation of Reynolds stress complex eddy viscosity model for coherent structure dynamics.Science China-Physics Mechanics & Astronomy,54(7),1319-1327.
MLA Jia YX,et al."Experimental investigation of Reynolds stress complex eddy viscosity model for coherent structure dynamics".Science China-Physics Mechanics & Astronomy 54.7(2011):1319-1327.
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