AN IDENTIFICATION OF ENERGY CASCADE IN TURBULENCE BY ORTHONORMAL WAVELET ANALYSIS

被引：82

作者：

YAMADA, M ^{[1
]}

OHKITANI, K ^{[1
]}

机构：

[1] KYOTO UNIV, MATH SCI RES INST, KYOTO 60601, JAPAN

来源：

PROGRESS OF THEORETICAL PHYSICS | 1991年 / 86卷 / 04期

关键词：

D O I：

10.1143/PTP.86.799

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Orthonormal wavelet expansion method is applied to an analysis of atmospheric turbulence data which shows more than two decades of the inertial subrange spectrum. The result of the orthonormal wavelet analysis of the turbulence data is discussed in comparison with those of an artificial random noise. The local wavelet spectra of turbulence show a characteristic structure, which is absent in the artificial random noise and is identified with the trace of the energy cascade process. The higher-order structure function of velocity, obtained by the wavelet analysis, shows the intermittent structure of the flow field.

引用

页码：799 / 815

页数：17

共 37 条

[1] HIGH-ORDER VELOCITY STRUCTURE FUNCTIONS IN TURBULENT SHEAR FLOWS [J].