EXPERIMENTAL INVESTIGATION OF UNIFORM-SHEAR FLOW PAST A CIRCULAR-CYLINDER

Abstract

Extensive laboratory experiments were carried out to investigate the uniform-shear flow approaching a circular cylinder. The aim was to present the Strouhal number (St)- Reynolds number (Re) diagrams over a broad range of the shear parameter K (0 less-than-or-equal-to K less-than-or-equal-to 0.25) and at higher values of Re (600 less-than-or-equal-to Re less-than-or-equal-to 1600). An image processing technique, in conjunction with flow visualization studies, was used to secure more quantitative depictions of vortex shedding from the cylinder. The Strouhal number increases with increasing shear parameter. The drag coefficient decreases with increasing Re; also, C(d) decreases as the shear parameter K increases.