Wind tunnel measurements of the aerodynamic characteristics of a 3:2 rectangular cylinder including non-Gaussian and non-stationary features

This paper presents a wind tunnel investigation of the aerodynamic characteristics (force and pressure coefficients) static 3:2 rectangular cylinder in smooth flow for angles attack between ?4° 90° at various values Reynolds number. In contrast to much existing literature, this study shows clear dependence mean drag coefficients on addition, variation parameters with angle is fully mapped symmetric section revealing that peak drag, lift, moment Strouhal number do not occur same critical attack. The present also first map identifying locations reattachment stagnation points as well zones where separated attached face section. phenomenon switching observed 25°, leading strong non-stationarity non-Gaussian distributions forces pressure. Another phenomenon, so-called unsteady low-frequency vortex shedding, higher These phenomena need be accounted when estimating loading aeroelastic instability these sections.