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| Extended self-similar scaling law of multi-scale eddy structure in wall turbulence | |
Jiang N(姜楠) ; Wang ZD(王振东); Shu W(舒玮); Jiang, N (reprint author), Chinese Acad Sci, Inst Mech LNM, Beijing 100080, Peoples R China.
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| Source Publication | Applied Mathematics and Mechanics (English Edition)
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| 2000 | |
| Volume | 21Issue:9Pages:1016-1023 |
| ISSN | 0253-4827 |
| Abstract | The longitudinal fluctuating velocity of a turbulent boundary layer was measured in a water channel at a moderate Reynolds number. The extended self-similar scaling law of structure function proposed by Benzi was verified. The longitudinal fluctuating velocity, in the turbulent boundary layer was decomposed into many multi-scale eddy structures by wavelet transform. The extended self-similar scaling law of structure function for each scale eddy velocity was investigated. The conclusions are I) The statistical properties of turbulence could be self-similar not only at high Reynolds number, but also at moderate and low Reynolds number, and they could be characterized by the same set of scaling exponents xi (1)(n) = n/3 and xi (2)(n) = n/3 of the fully developed regime. 2) The range of scales where the extended self-similarity valid is much larger than the inertial range and extends far deep into the dissipation range,vith the same set of scaling exponents. 3) The extended selfsimilarity is applicable not only for homogeneous turbulence, but also for shear turbulence such as turbulent boundary layers. |
| Subject Area | 力学 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000165748200006 |
| WOS Research Area | Mathematics ; Mechanics |
| WOS Subject | Mathematics, Applied ; Mechanics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/16840 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Jiang, N (reprint author), Chinese Acad Sci, Inst Mech LNM, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Jiang N,Wang ZD,Shu W,et al. Extended self-similar scaling law of multi-scale eddy structure in wall turbulence[J]. Applied Mathematics and Mechanics (English Edition),2000,21,9,:1016-1023. |
| APA | 姜楠,王振东,舒玮,&Jiang, N .(2000).Extended self-similar scaling law of multi-scale eddy structure in wall turbulence.Applied Mathematics and Mechanics (English Edition),21(9),1016-1023. |
| MLA | 姜楠,et al."Extended self-similar scaling law of multi-scale eddy structure in wall turbulence".Applied Mathematics and Mechanics (English Edition) 21.9(2000):1016-1023. |
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