American Football

The Colorful Fluid Mixing Gallery

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This simulation shows the flow field around an American football.
The laces trigger the flow separation behind the ball.
Two large vortices form behind the laces.
Because of the ball's rotation these vortices are asymmetric.
CFD simulation with Ansys Fluent and visualization with Ansys CFD-Post.

More detail can be found in Laces Play an Important Role in Footbal Flight.


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Last Updated February 1, 2021 by André Bakker
© André Bakker 1998-2021