Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 13, 2020 - September 16, 2020
Recently, golf balls with small dimples called Micro Surface Roughness (MSR) inside and outside the dimples have been developed. It is said that these balls have a longer flight distance than ordinary golf balls, and their research is being advanced. Therefore, in this study, using NIKE's RZN TOUR and BRIDGESTON's TOUR B as models, balls with dimples different in depth and micro-dimples with concave, convex, and dual dimples were made with a 3D printer, and aerodynamic force measurements in rotating and gains were obtained by wind tunnel experiments and trajectory simulation was performed. As a result, when the dimple depth was 1.0 mm, the drag coefficient increased when MSR was applied, and the lift coefficient showed the highest value for the D1.0RZN convex. When the dimple depth was 0.5 mm, the drag coefficient decreased when MSR was applied. The lift coefficient of D0.5RZN convex showed the highest value. As a result of flight trajectory simulation, D0.5RZN convex flies best.
