Drag across a golf ball can affect distance traveled when hitting a ball. An average golf ball will have a drag coefficient of, 0.24 < CD < 0.7, in a Reynolds number range of 30,000 < ReD < 108,000. This paper investigates the effect of dimple patterns on the boundary layer around a ball. Changing the depth of the dimple will cause a change to the drag coefficient. A deeper dimple pattern will cause a larger drag coefficient at higher velocities, u > 35 m/s. This research found that a significantly deeper dimple pattern will greatly affect the boundary layer, thus changing the drag coefficient and boundary layer.
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机译：在高尔夫球上拖动会影响击球时的行进距离。在30,000 em>的雷诺数范围内，平均高尔夫球的阻力系数为0.24 em> C D <0.7 Re D <108,000。本文研究了凹痕图案对球边界层的影响。改变凹坑的深度将导致阻力系数的变化。更深的凹坑模式会在较高的速度（u> 35 m / s）下产生较大的阻力系数。这项研究发现，深得多的凹坑图案将极大地影响边界层，从而改变阻力系数和边界层。
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