4019286
Measurement of aerodynamic forces and flow field of a soccer ball in a wind tunnel for knuckle effect
Wind tunnel experiments have been conducted to investigate the knuckle effect of a soccer ball. In the present experiment, we measured the surface pressure of a ball as well as aerodynamic forces, and made tuft grid visualization to investigate wake structure behind a ball. We are in particular interested in the seemingly random nature of the knuckle effect resulting from the movement of vortical structure behind a ball in the super critical Re range and in the detailed mechanism causing the knuckle effect. Discussion will also refers to knuckle balls of baseball and volleyball.
© Copyright 2010 Procedia Engineering. Elsevier. All rights reserved.
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| Notations: | technical and natural sciences sport games |
| Published in: | Procedia Engineering |
| Language: | English |
| Published: |
2010
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| Online Access: | https://doi.org/10.1016/j.proeng.2010.04.017 |
| Volume: | 2 |
| Issue: | 2 |
| Pages: | 2467-2472 |
| Document types: | article |
| Level: | advanced |