新品と使い古しのテニスボールの空力特性と流場の違い

抄録

Spinning serve or shot exist as a technique in tennis. For a correct competition to hit across the net. The batted ball of the high turn is shot by friction with the gut. So it is necessary to elucidate the aerodynamic characteristics of a spinning ball. In addition, it is necessary to compare various balls. In this study performed fluid force measurement and two-dimensional dynamic PIV with high number of rotation. We was confirmed that felt fuzzed a race by the PIV measurement.