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Published October 1993 | Published
Journal Article Open

The lift of a cylinder executing rotary motions in a uniform flow

Abstract

The mean lift coefficient of a circular cylinder executing rotary motions in a uniform flow is investigated. These motions include steady rotation, and rotary oscillations with a net rotation rate. Results for the steadily rotating cylinder show that for a given rotation rate, larger cylinder aspect ratios yield higher lift coefficients. It was also found that the addition of forced rotary oscillations to the steady rotation of the cylinder increases the lift coefficient in the cases where the wake would normally be separated in the steadily rotating case, but decreases it otherwise. In addition, a method for estimating the mean lift of a rotating cylinder is presented. Estimates based on this method compare favourably with similar data published for steadily rotating cylinders.

Additional Information

© 1993 Cambridge University Press. Received 30 April 1992 and in revised form 25 February 1993. This research was sponsored by the Air Force Office of Scientific Research, URI AFOSR Grant No. F49620-86-C-0134.

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August 20, 2023
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