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Aerodynamic effects of dimples on soccer ball surfaces.

Authors
  • Hong, Sungchan1
  • Asai, Takeshi2
  • 1 Advanced Research Initiative for Human High Performance (ARIHHP), University of Tsukuba, Tsukuba, 305-8574, Japan. , (Japan)
  • 2 Institute of Health and Sports Science, University of Tsukuba, Tsukuba 305-8574, Japan. , (Japan)
Type
Published Article
Journal
Heliyon
Publisher
Elsevier
Publication Date
Oct 01, 2017
Volume
3
Issue
10
Identifiers
DOI: 10.1016/j.heliyon.2017.e00432
PMID: 29226263
Source
Medline
Keywords
License
Unknown

Abstract

Recently, the shape and design of the panel on the official ball used in the FIFA World Cup was considerably different from that of a conventional soccer ball (having 32 pentagonal and hexagonal panels). Depending on the number of different panels and their orientation, the aerodynamic force experienced by a ball is believed to change, which in turn changes the ball trajectory. However, not much is known about the impact of the surface forms of a ball on its aerodynamics. Therefore, in the present study, 10 different types of soccer balls were produced and their aerodynamic properties were studied by wind tunnel experiments. The results confirmed that the aerodynamic force acting on the ball varied considerably depending on the existence of dimples on the ball surface. In addition, the 4 types of soccer balls, which had different kinds of roughness, revealed that even balls having the same number and shapes of panels experienced greatly varying aerodynamic forces depending on the surface form of the balls.

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