抄録
A new cross-correlation method, which is called a wavelet cross-correlation analysis and expresses the statistical cross-correlation of any signal in terms of period and time delay, is proposed. As a practical application to the field of fluid engineering, wavelet cross-correlation is employed to analyze cross-correlation relationships between xcomponents of the fluctuation velocities at two points on opposite sides of the center line and along the center line of a plane turbulent jet in terms of period and time delay. The period of vortex and apparent flapping motions can be easily determined in terms of period and time delay.
