The lateral force on a spinning sphere: Aerodynamics of a curveball
作者:
Robert G. Watts,
Ricardo Ferrer,
期刊:
American Journal of Physics
(AIP Available online 1987)
卷期:
Volume 55,
issue 1
页码: 40-44
ISSN:0002-9505
年代: 1987
DOI:10.1119/1.14969
出版商: American Association of Physics Teachers
关键词: DRAG;AERODYNAMICS;REYNOLDS NUMBER;SPHERES;BOUNDARY LAYERS;BERNOULLI LAW
数据来源: AIP
摘要:
The lateral force on a spinning baseball in a wind tunnel has been measured. The magnitude of the force is nearly independent of the orientation of the seams of the ball. The drag coefficient appears to be at most weakly dependent on Reynolds number and to be principally a function of the ratio of the rotational speed of the equator of the ball to the wind tunnel speed. This is to be compared to the work of Briggs, which implies a strong effect of Reynolds number on the drag coefficient.
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