Wavelet Statistical Analysis of the Near Field Flow Structure in a Turbulent Jet

摘要

In the present paper, the definitions of the wavelet-based statistical quantities on turbulence analysis were first developed to study the characteristics of statistics in frequency space. Then, the wavelet statistical quantities were used to analyze eddy motions and the structure of the energy transfer over a two-dimensional frequency-physics plane in a plane jet. In the shear layer, behaviors of Reynolds stress reversals were easily detected at several frequencies for x/b_0=2, 6 and 10.