A15 ゴルフボールのディンプル構造に対する空力特性(ボール)

概要

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The aerodynamic characteristics of a three-dimensional body, such as sphere depend on the, form and surface structure of the body. It is known that a sphere's drag can be reduced by changing its surface structure. The purpose of this study is to clarify the relation of the drag and flow field to difference of the Shape of dimple. So, a diameter of the sphere is 42.6mm, 328 dimples are distributed on the sphere surface, and the shape of dimple are arc, cone and trapezoid. The drag, the pressure distribution and a detailed flow around the sphere clarified by the experiment and the numerical analysis that used turbulent flow model LES. As a result of an experiment and numerical analysis, the drag, the pressure distribution, the friction drag and the detailed flow pattern for arc, cone and trapezoid become clear.
社団法人日本機械学会の論文
2007-11-13