Spatial correlation characteristics of a rectangular cylinder and effect of a vertical splitter plate

Abstract

When wind pressure acting on a structure and flow around the structure have fluctuating components, characteristics of the dominant frequency components are important for wind resistant design. In this research, spatial correlation characteristics for the rectangular cross-section with wind speed and angle of attack are clarified using not only power spectrum, correlation coefficient, and coherence but the indices focusing on the dominant frequency components proposed in this research. Furthermore, the effect on the spatial correlation when a splitter plate was installed in the wake region orthogonal to the cylinder axis was examined. The results such that the correlation decreased at the angle of attack after periodical reattachment were obtained.