Eduction of Unsteady Structure in a Turbulent Jet by Use of Continuous and Discrete Wavelet Transforms

By Hui Li; Masahiro Takei; Mitsuaki Ochi

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Eduction of Unsteady Structure in a Turbulent Jet by Use of Continuous and Discrete Wavelet Transforms

机译：利用连续和离散小波变换研究湍流射流中的非定常结构

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摘要

To evaluate unsteady eddy structures of a plane turbulent jet in the dimension of time and scale, velocity signals were analyzed using continuous and discrete wavelet transforms in this paper. By analyzing the distribution of coefficients of continuous wavelet transform, localized nearly periodic eddy motions with α=64, 100 and 180 ms were observed in the shear layer of x/d=8.5 in the time ranges of t=0-220, 280-600 and 680-1000 ms, respectively.

机译：为了在时间和尺度上评估平面湍流的不稳定涡结构，本文使用连续和离散小波变换分析了速度信号。通过分析连续小波变换的系数分布，在t = 0-220、280-t的时间范围内，在x / d = 8.5的剪切层中观察到了α= 64、100和180 ms的局部近周期性涡运动。 600和680-1000毫秒。

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来源
《Transactions of the Japan society for aeronautical and space sciences》 |2000年第138期|p.190-196|共7页
作者
By Hui Li; Masahiro Takei; Mitsuaki Ochi;
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作者单位

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类航空;
关键词
Continuous Wavelet Transform; Discrete Wavelet Transform; Eddy;

机译：连续小波变换离散小波变换涡流;

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1. Wavelet Multiresolution Analysis Applied to Coherent Structure Eduction of a Turbulent Jet [J] . By Hui Li, Mashiro Takei, Yoshifuru Saito Transactions of the Japan society for aeronautical and space sciences . 2001,第142期

机译：小波多分辨率分析在湍流射流相干结构生成中的应用
2. Flow field around a vibrating cantilever: Coherent structure eduction by continuous wavelet transform and proper orthogonal decomposition [J] . Kim Y.-H., Cierpka C., Wereley S.T. Journal of Fluid Mechanics . 2011,第Null期

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3. Automatic eduction and statistical analysis of coherent structures in the wall region of a confined plane turbulent impinging jet [J] . M. Pavageau, K. Loubière, S. Gupta Experiments in Fluids . 2006,第1期

机译：密闭平面湍流射流壁区域内相干结构的自动导出和统计分析
4. STRUCTURE EVALUATION OF UNSTEADY TURBULENT FLOW WITH CONTINUOUS AND DISCRETE WAVELET TRANSFORMS [C] . Hui Li, Yoshifuru Saito, Masahiro Takei, ASME/JSME Joint Fluids Engineering Conference . 2000

机译：连续和离散小波变换的不稳定湍流结构评估
5. Discretization of continuous wavelet transforms and wavelet frames. [D] . Maggioni, Mauro. 2002

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6. Prediction of Protein-Protein Interactions from Amino Acid Sequences Based on Continuous and Discrete Wavelet Transform Features [O] . Tao Wang, Liping Li, Yu-An Huang, 2018

机译：基于连续和离散小波变换特征的氨基酸序列蛋白质-蛋白质相互作用预测
7. The Continuous and Discrete Wavelet Transform Applied to Estimation of a Turbulent Jet [O] . Hui LI, Masahiro TAKEI, Mitsuaki OCHI, 1997

机译：连续和离散小波变换应用于湍流射流的估计

Eduction of Unsteady Structure in a Turbulent Jet by Use of Continuous and Discrete Wavelet Transforms

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