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Old   June 16, 2002, 09:35
Default Soccer and CFD
  #1
Ulf
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Hi, I am working with CFD, but I am also interested in soccer, especially now during the World Cup. I wonder (of curiosity) if there exists any research (or work) with CFD and soccer? Regards, Ulf
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Old   June 16, 2002, 12:41
Default Re: Soccer and CFD
  #2
Thomas P. Abraham
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Hello Ulf,

In the recent newsletter from FLUENT, they have reported some CFD work related to aerodynamics around a soccer ball.

Thanks,

Thomas
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Old   June 16, 2002, 14:34
Default Re: Soccer and CFD
  #3
sam kashan
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check out http://www.fluent.com/about/news/pr/pr43.htm
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Old   June 17, 2002, 12:52
Default Football !!!, no soccer
  #4
FOOTBALL
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Old   June 18, 2002, 08:28
Default Re: Football !!!, no soccer
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Erwin
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Yes, one recent Fluent News issue also contains a study on the airflow around an American football.
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Old   June 18, 2002, 10:48
Default Re: Football !!!, no soccer
  #6
Thomas P. Abraham
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It would be interesting to know whether any CFD work been done for studying the aerodynamics around a cricket ball. Of particulat interest would be the explaination for the art of reverse swing. CFD should be able to explain whether such a thing happens due to some special physics or ball tampering.

Thanks,

Thomas
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Old   June 19, 2002, 03:55
Default Re: Football !!!, no soccer
  #7
Atholl
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Likewise with golfballs: One manufacturer has recently opted for hexagonal dimples as opposed to the classic rounded ones. This improves trajectory and distance, allegedly.
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Old   June 19, 2002, 18:44
Default Re: Football !!!, no soccer
  #8
Axel Rohde
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Hexagonal dimples on golf balls first appeared 20 years ago. I have played both kinds, hexagonal and round. I have not noticed any difference in distance or trajectory, and I hit the ball fairly decent (250 - 300 yards off the tee). From a fluid dynamics viewpoint, I don't see why it should make any difference, either. One could equally play a ball without dimples that has a rough surface. The idea is to make the boundary layer turbulent. The only problem with rough golf balls is that dirt sticks to it, which makes the ball hard to clean. Also, a rough ball would be a drag, literally, on the putting green. The only difference in golf balls, as far as amateurs should be concerned, is the amount of compression. A harder ball flies slightly lower and farther but gives you less 'feel' on your short game.
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Old   June 25, 2002, 07:28
Default Re: Soccer and CFD (try2)
  #9
Sergu
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Read book: J Wesson. The Science of Soccer http://bookmarkphysics.iop.org/bookpge.htm?book=1102p

Chapter 4. "The ball in flight" http://bookmarkphysics.iop.org/fullb...wessonch04.pdf
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Old   June 26, 2002, 15:39
Default Re: Soccer and CFD
  #10
Bill
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Interesting article by fluent, however, they have failed to take into account the football valve placement when kicking the ball and valve weight. This can amplify the bending of the ball during flight and dipping of the ball also. Clearly modelling this with CFD is not possible!
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