Forces on and Stability of a Cylinder in a Wake

J. Offshore Mech. Arct. Eng 127(1), 39-45 (Mar 23, 2005) (7 pages) doi:10.1115/1.1854697 History: Received February 15, 2004; Revised July 31, 2004; Online March 23, 2005
Copyright © 2005 by ASME
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Comparison of Experimental data of Price and Paidoussis 6 and Zdravkovich and Pridden 3 at Re=31,000 with Eq. (6) for drag of a inline (T=0) downstream cylinder
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Comparison of experimental data at L/Du=5 for lift and drag coefficient on downstream cylinder from Price and Paidoussis 6 at Re=20,000, Bokaian 1 at Re=5600, Wu 10, and Huse 15, with Eqs. (6) and (9)
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Fixed upstream cylinder and spring-supported downstream cylinder
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Equilibrium solutions to kxx=FD(T,Li+x), top, and kyy=FL(Ti+y,L), bottom
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Static (top) and dynamic (bottom) stability coefficient contours. Lower stability coefficient gives lower velocity for onset of instability.
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Minimum initial, unstressed, spacing at zero flow to achieve a 1 diameter space between inline upstream and down stream spring supported cylinders with flow
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Cylinder in the wake of another cylinder
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Measured drag coefficient and Eq. (6)
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Measured lift coefficient and Eq. (9)
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Lift coefficients with different diameters
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Drag (top) and lift (bottom) contours
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Longitudinal and transverse derivatives of lift and drag coefficients




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