Wavelet analysis on fluctuating characteristics of airflow in building environments

This paper introduces the theory of the wavelet transform (WT) method and its application to the study of fluctuating characteristics of airflows in building environments. By applying wavelet analysis to the natural wind around buildings and to the free jet flow from a centrifugal fan, the differences and relations between natural and mechanical wind currents were found, and the results of the study indicate the unique features and advantages of wavelet analysis in the study of fluctuating characteristics of airflows.