USING WAVELET TRANSFORM TO STUDY THE LIPSCHITZ LOCAL SINGULAR EXPONENT IN WALL TURBULENCE

Applied Mathematics and Mechanics (English Edition) ›› 1998, Vol. 19 ›› Issue (10): 983-990.

USING WAVELET TRANSFORM TO STUDY THE LIPSCHITZ LOCAL SINGULAR EXPONENT IN WALL TURBULENCE

姜楠, 王振东, 舒玮

Department of Mechanics, Tianjin University, Tianjin 300072; Laboratory for Nonlinear Mechanics of Continuous Media, Institute of Mechanics, Academia Sinica, Beijing 100080, P. R. China

收稿日期:1997-01-31 修回日期:1998-03-06 出版日期:1998-10-18 发布日期:1998-10-18
基金资助:
Project supported by the National Natural Science Foundation or China (19672040)

USING WAVELET TRANSFORM TO STUDY THE LIPSCHITZ LOCAL SINGULAR EXPONENT IN WALL TURBULENCE

Jiang Nan, Wang Zhendong, Shu Wei

Department of Mechanics, Tianjin University, Tianjin 300072; Laboratory for Nonlinear Mechanics of Continuous Media, Institute of Mechanics, Academia Sinica, Beijing 100080, P. R. China

Received:1997-01-31 Revised:1998-03-06 Online:1998-10-18 Published:1998-10-18
Supported by:
Project supported by the National Natural Science Foundation or China (19672040)

摘要/Abstract

摘要： In this paper, wavelet transform is introduced to study the Lipschitz local singular exponent for characterizing the local singularity behavior of fluctuating velocity in wall turbulence. It is found that the local singular exponent is negative when the ejections and sweeps of coherent structures occur in a turbulent boundary layer.

关键词: wavelet transform, coherent structure, Lipschitz local singular exponent

Abstract: In this paper, wavelet transform is introduced to study the Lipschitz local singular exponent for characterizing the local singularity behavior of fluctuating velocity in wall turbulence. It is found that the local singular exponent is negative when the ejections and sweeps of coherent structures occur in a turbulent boundary layer.

Key words: wavelet transform, coherent structure, Lipschitz local singular exponent

姜楠;王振东;舒玮. USING WAVELET TRANSFORM TO STUDY THE LIPSCHITZ LOCAL SINGULAR EXPONENT IN WALL TURBULENCE[J]. Applied Mathematics and Mechanics (English Edition), 1998, 19(10): 983-990.

Jiang Nan;Wang Zhendong;Shu Wei. USING WAVELET TRANSFORM TO STUDY THE LIPSCHITZ LOCAL SINGULAR EXPONENT IN WALL TURBULENCE[J]. Applied Mathematics and Mechanics (English Edition), 1998, 19(10): 983-990.

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USING WAVELET TRANSFORM TO STUDY THE LIPSCHITZ LOCAL SINGULAR EXPONENT IN WALL TURBULENCE

USING WAVELET TRANSFORM TO STUDY THE LIPSCHITZ LOCAL SINGULAR EXPONENT IN WALL TURBULENCE

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