Abstract
In this study, The Flow characteristics around a rotating circular cylinder with grooves are investigated. Thirty-two arc grooves are set to cylinder surface. The surface pressure of rotating circular cylinder with grooves is measured by transducer. In smooth cylinder, the lift coefficient shows negative value as spin rate ratio (rotating speed of cylinder surface/uniform flow) increases in Re ≥1.0×10^5. However, the lift coefficient of cylinder with grooves increases monotonically with the increase in spin rate ratio.
