A9 The Characteristics of Fluid Forces and Flow Behavior for a Badminton Shuttlecock at High Reynolds Numbers

Abstract

A shuttlecock which has an open conical shape is a high-drag projectile used in the sport of badminton, and the shape of the shuttlecock makes it aerodynamically stable. In the present study, measurements of aerodynamic forces and flow visualization experiments are carried out in order to investigate the relationship between fluid forces and vortex behavior around a shuttlecock at high Reynolds numbers. And the effect of shuttlecock deformation on aerodynamic properties was also investigated because it is presumed that aerodynamic forces are affected by the deformation of shuttlecock skirt. The drag coefficient for the shuttlecock with no gap is significantly smaller than that for the ordinary shuttlecock (with gap). For the ordinary shuttlecock, the air flows through the gap in the shuttlecock skirt, and this flow is related to high aerodynamic drag.