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Out-of-plane force on a circular cylinder at large angles of inclination to a uniform stream

Published online by Cambridge University Press:  04 July 2016

P. J. Lamont  and
B. L. Hunt
P. J. Lamont
Affiliation:
Department of Aeronautical Engineering, University of Bristol
B. L. Hunt
Affiliation:
Department of Aeronautical Engineering, University of Bristol
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Extract

The force on a circular cylinder inclined to a uniform flow may be resolved into three components, one perpendicular to the plane defined by the axis of the cylinder and the upstream velocity vector (described in this report as the out-of-plane force) one within this plane and perpendicular to the axis (the in-plane normal force) and one within this plane and along the axis (the in-plane axial force).

It has become common practice, since Allen and Perkins, to model the flow over a circular cylinder inclined to a uniform flow by resolving the incident flow into two perpendicular component flows. One flow is taken to be parallel to the axis of the cylinder (axial flow) and the other normal to it (cross flow). The cross flow is not taken to be uniform over the whole length of the circular cylinder. Instead it is considered to be started impulsively at the nose and to develop over the length of the body in the same way that the impulsively-started flow over a cylinder develops with time.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 77 , Issue 745 , January 1973 , pp. 41 - 45
Copyright
Copyright © Royal Aeronautical Society 1973 

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