Aerodynamic and surface comparisons between Telstar 18 and Brazuca

Aerodynamic and surface comparisons between Telstar 18 and Brazuca
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Telstar 18 和 Brazuca 之间的空气动力学和表面比较

DOI:
10.1177/1754337118773214
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发表时间:
2018
期刊:
Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology
影响因子:
--
通讯作者:
T. Asai
T. Asai
中科院分区:
--
文献类型:
--
作者:
J. Goff;Sungchan Hong;T. Asai

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分别确定了 2018 年和 2014 年世界杯比赛用球 Telstar 18 和 Brazuca 的空气动力系数。空气动力学系数的实验确定促进了针对实际比赛中大多数发射速度的计算确定的足球轨迹的开发。尽管 Telstar 18 的高速踢球水平范围将比 Brazuca 的水平范围短近 10%,但 Telstar 18 和 Brazuca 都具有相似的指节效果,因为它们的临界速度几乎相同,高速阻力系数相差不到 10%。表面比较揭示了为什么两个世界杯用球的空气动力学特性如此相似。
Aerodynamic coefficients were determined for Telstar 18 and Brazuca, match balls for the 2018 and 2014 World Cups, respectively. Experimental determination of aerodynamic coefficients prompted the development of computationally determined soccer ball trajectories for most launch speeds experienced in actual play. Although Telstar 18’s horizontal range will be nearly 10% shorter than Brazuca’s horizontal range for high-speed kicks, both Telstar 18 and Brazuca have similar knuckling effects due to nearly equal critical speeds and high-speed drag coefficients that differ by less than 10%. Surface comparisons suggest why aerodynamic properties for the two World Cup balls are so similar.
DOI: 10.1007/bf02844207
发表时间: 2007-06-01
期刊: SPORTS ENGINEERING
影响因子: 1.7
作者:
Asai, T.;Seo, K.;Sakashita, R.
通讯作者: Sakashita, R.