| 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
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| Source Publication | Science China-Physics Mechanics & Astronomy
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| 2011 | |
| Volume | 54Issue:7Pages:1319-1327 |
| ISSN | 1674-7348 |
| Abstract | Time 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. |
| Keyword | Turbulent Boundary Layer Coherent Structure Complex Eddy Viscosity Model Reynolds Stress Phase Difference Turbulent-boundary-layer Wave |
| Subject Area | Physics |
| DOI | 10.1007/s11433-011-4370-5 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000291951500026 |
| WOS Keyword | TURBULENT-BOUNDARY-LAYER ; WAVE |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| Funding Organization | This 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 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/44920 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Jiang, 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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