| 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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| 发表期刊 | Science China-Physics Mechanics & Astronomy
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| 2011
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| 卷号 | 54期号:7页码:1319-1327 |
| ISSN | 1674-7348
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| 摘要 | 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. |
| 关键词 | Turbulent Boundary Layer
Coherent Structure
Complex Eddy Viscosity Model
Reynolds Stress
Phase Difference
Turbulent-boundary-layer
Wave
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| 学科领域 | Physics
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| DOI | 10.1007/s11433-011-4370-5
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000291951500026
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| 关键词[WOS] | TURBULENT-BOUNDARY-LAYER
; WAVE
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| WOS研究方向 | Physics
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| WOS类目 | Physics, Multidisciplinary
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| 项目资助者 | 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.
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| 论文分区 | 二类/Q3
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/44920
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| 专题 | 非线性力学国家重点实验室
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| 通讯作者 | Jiang, N (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100080, Peoples R China |
推荐引用方式
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.
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| 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.
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| 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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