数値解析によるバドミントンシャトルコックの高減速特性

抄録

A badminton shuttlecock is an airborne projectile with a unique shape. The shuttlecock creates much higher drag, causing it to decelerate more rapidly than a ball. In the previous study, high aerodynamic characteristics of a badminton shuttlecock was examined in a wind tunnel, and it was confirmed that the gaps of shuttlecock were strongly related to high aerodynamic drag. However, it is difficult to investigate the flow through the gaps experimentally. In the present study, the numerical analysis on the flow behavior through the gaps of the shuttlecock with and without gaps is performed by using OpenFOAM method. The calculated drag is in good agreement with the experimental results. For the shuttlecock with gaps, the air flowed through the gaps in the shuttlecock skirt, and flow through the gaps behave like a jet. This flow causes a high drag because the pressure inside of the shuttlecock with gaps becomes lower than that of the shuttlecock with no gaps.