New research methods of coherent structure based on wavelet analysis

被引：0

作者：

Liu, HF ^{[1
]}

Fang, DW ^{[1
]}

Zhou, WX ^{[1
]}

Yu, ZH ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Shanghai 200237, Peoples R China

来源：

HYDROGEN ENERGY PROGRESS XIII, VOLS 1 AND 2, PROCEEDINGS | 2000年

关键词：

wavelet analysis; flow structure; coherent structure; jet flow;

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A new energy maxima criterion, which can clearly distinguish fundamental wave and subharmonic with Morlet wavelet, has been presented. A new formula, which can be used to not only truly reconstruct the wave shape and amplitude of coherent structure, but also eliminate the disturbance of high frequency signal, has been presented utilizing the peculiarities of Morlet wavelet and orthonormal wavelet. At the same time, an average algorithm to compute structure exponent using Mexican hat wavelet has been presented. The results of applying these methods to the study of fluctuation velocity of round jet flow illustrate that these methods can be used to investigate turbulence.

引用

页码：1347 / 1352

页数：6

共 50 条

[41] Identification of turbulent coherent structures based on wavelet and bi-spectrum analysis
Zhang, Bin
Wang, Tong
Gu, Chuan'gang
Dai, Zhengyuan
Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery, 2009, 40 (11): : 203 - 207
[42] Wavelet analysis of spatial coherent structures in the photosphere
Pietropaolo, E
Berrilli, F
Consolini, G
Smaldone, LA
Straus, T
Cauzzi, G
Bruno, R
Bavassano, B
9TH EUROPEAN MEETING ON SOLAR PHYSICS: MAGNETIC FIELDS AND SOLAR PROCESSES, VOLS 1 AND 2, 1999, 448 : 343 - 347
[43] Wavelet quadrature methods for detecting coherent structures in fluid turbulence
Kaspersen, JH
Hudgins, L
WAVELET APPLICATIONS IN SIGNAL AND IMAGE PROCESSING IV, PTS 1 AND 2, 1996, 2825 : 540 - 550
[44] Application of a wavelet based FRF to the analysis of a bilinear structure
Hartin, JR
PROCEEDINGS OF IMAC-XIX: A CONFERENCE ON STRUCTURAL DYNAMICS, VOLS 1 AND 2, 2001, 4359 : 1414 - 1419
[45] Methods for Improving Image Quality for Contour and Textures Analysis Using New Wavelet Methods
Dumitrescu, Catalin
Raboaca, Maria Simona
Felseghi, Raluca Andreea
APPLIED SCIENCES-BASEL, 2021, 11 (09):
[46] Comparison of fault classification methods based on wavelet analysis and ANN
Mahanty, RN
Gupta, PBD
ELECTRIC POWER COMPONENTS AND SYSTEMS, 2006, 34 (01) : 47 - 60
[47] Surge data processing based on wavelet analysis and fractal methods
Li, Mei-Lin
Zhang, Chun-Mei
Wang, Shang-Jin
Xi, Guang
Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics, 2002, 23 (02):
[48] Research on signal analysis method based wavelet analysis and grey theory
Song, Lijun
Qu, Hongxing
International Journal of Signal Processing, Image Processing and Pattern Recognition, 2015, 8 (09) : 239 - 248
[49] Groupoid methods in wavelet analysis
Ionescu, Marius
Muhly, Paul S.
GROUP REPRESENTATIONS, ERGODIC THEORY, AND MATHEMATICAL PHYSICS: A TRIBUTE TO GEORGE W. MACKEY, 2007, 449 : 193 - 208
[50] Research on Sheet Crack Identification of Frame Structure Using Wavelet Analysis
Guan, Deqing
Zhong, Xiaolin
Ying, Hongwei
FRONTIERS OF GREEN BUILDING, MATERIALS AND CIVIL ENGINEERING, PTS 1-8, 2011, 71-78 : 4074 - 4077

← 1 2 3 4 5 →