Wavelet and chaos analysis of irregularities of vortex shedding

摘要

This paper reports the potential of using two types of wavelets namely; the Mexican hat and the modulated Gaussian wavelets to analyze the frequency of vortex shedding from a single cylinder in a cross flow. Furthermore, the paper examines the chaotic behaviors of the vortex shedding signals of various positions along the cylinder span. It is found that the signals along the cylinder are characterized by high-energy contents in the low frequency range below the Strouhal frequency. (C) 1998 Elsevier Science Ltd [References: 24]