The influence of panel orientation on the aerodynamics of soccer balls
The influence of panel orientation on the aerodynamics of soccer balls
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面板方向对足球空气动力学的影响
DOI：
10.1016/j.proeng.2014.06.133
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
T.
中科院分区：
文献类型：
--
作者：
Hong;S.;Sakamoto;K.;Washida;Y.;Nakayama;M. & Asai;T.
通常，足球由32个五边形和六边形面板构成。最近，Teamgeist和普天同庆球分别有14个和8个面板，与传统球有显着不同的面板形状和设计。最新款名为Cafusa，由32块面板制成，已被许多足球联赛采用。然而，对这些球的空气动力学特性的研究很少。本研究探讨了足球的轨迹和空气动力学特性的构建与不同数量和形状的面板。风洞试验结果表明，气动力的变化显着根据面板的数量。它们也因球的面板方向和旋转而有很大的不同。撞击点的结果表明，球的轨迹显着变化，根据面板的方向，这表明面板的方向对球的飞行有显着的影响。此外，板的形状，而不是数量，被认为是影响飞行轨迹，因为具有相同数量的板的球根据其板的形状和方向而变化。
Typically, soccer balls are constructed with 32 pentagonal and hexagonal panels. More recently Teamgeist and Jabulani balls have 14 and 8 panels, respectively, with dramatically different panel shapes and designs from conventional balls. The latest model called Cafusa, made with 32 panels, has been adopted by many soccer leagues. However, there are few studies on the aerodynamic characteristics of these balls. This study examined the trajectory and aerodynamic characteristics of soccer balls constructed with different numbers and shapes of panels. Results of wind tunnel tests indicated that the aerodynamic forces varied significantly according to the number of panels. They were also substantially different by the panel orientation of the balls and their rotation. The results for points of impact showed that the ball trajectory changes dramatically according to panel orientation, suggesting that panel orientation has significant effects on the flight of the balls. Furthermore, the panel shapes, rather than the numbers, are considered to affect the flight trajectory because balls with the same number of panels varied depending on their panel shape and orientation.