Cross‐Flow Vibrations of Cylinder in Irregular Oscillatory Flow
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 120, Issue 6
Abstract
This study presents the results of an experimental work with a spring‐supported cylinder exposed to irregular oscillatory flow. The steady current and regular‐oscillatory‐flow cases are also included for reference purpose. The oscillatory‐flow conditions are created by the so‐called carriage technique. The cross‐flow response of the cylinder has been investigated for the Keulegan‐Carpenter numbers equal to 10, 20, and 36, and for the reduced velocity from 0 to 11.5. The effect of the width of the flow‐velocity spectrum on the cylinder response was studied. The results show that the cylinder vibrations under irregular‐oscillatory‐flow conditions differ considerably from the response in the regular oscillatory flow. First of all, the cylinder responds mostly with its natural frequency. Second, vibration amplitudes are considerably reduced. Third, the vibrations are initiated earlier (i.e., at smaller values of the reduced velocity) than in regular oscillatory flow.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Bearman, P. W. (1984). “Vortex shedding from oscillating bodies.” Annual Review of Fluid Mechanics, M. van Dyke et al., eds., Annual Reviews, Inc., Palo Alto, Calif.
2.
Bearman, P. W., and Mackwood, P. R. (1991). “Non‐linear vibration characteristic of a cylinder in an oscillating water flow.” Proc., 5th Conf. on Flow Induced Vibrations, Brighton, U.K., 21–31.
3.
Chen, S‐S. (1987). “Flow‐induced vibration of circular cylindrical structures.” Hemisphere Publishing Corp., Washington, D.C.
4.
Feng, C. C. (1968). “The measurement of vortex‐induced effects in flow past stationary and oscillating circular and D‐section cylinders,” MSc thesis, The University of British Columbia, Vancouver, British Columbia, Canada.
5.
Graham, J. M. R. (1987). “Transverse forces on cylinders in random waves.” Proc., Int. Conf. on Flow Induced Vibrations, British Hydromechanics Research Association (BHRA), Cranfield, U.K., 191–201.
6.
Griffin, O. M., and Koopman, G. H. (1977). “The vortex‐excited lift and reaction forces on resonantly vibrating cylinders.” J. Sound and Vibration, 54(3), 435–448.
7.
Jacobsen, V., Bryndum, M. B., Nielsen, R., and Fines, R. (1984). “Cross‐flow vibrations of a pipe close to a rigid boundary.” J. Energy Res. Technol., 106(4), 451–457.
8.
Lipsett, A. W., and Williamson, I. D. (1991). “Two‐dimensional response of a flexibly mounted cylinder in oscillatory flow.” Proc., 10th Int. Conf. on Offshore Mech. and Arctic Engrg., I‐A, ASME, New York, N.Y., 187–194.
9.
Longoria, R. L., Beaman, J. J., and Miksad, R. W. (1991). “An experimental investigation of forces induced on cylinders by random oscillatory flow.” J. Offshore Mech. and Arctic Engrg., 113, 275–285.
10.
Maull, D. J., and Kaye, D. (1988). “Oscillations of a flexible cylinder in waves.” Proc., Int. Conf. on Behaviour of Offshore Structures, Tapir Publications, Trondheim, Norway, 535–549.
11.
McConnell, K. G., and Park, Y.‐Y. (1982). “The frequency components of fluid‐lift forces acting on a cylinder oscillating in still water.” Experimental Mech., 22(6), 216–222.
12.
Overvik, T. (1982). “Hydroelastic vibration of multiple risers in a steady current,” PhD thesis, Div. of Port and Engrg., Norwegian Institute of Technology, Trondheim, Norway.
13.
Park, Y. (1981). “The response and the lift force analysis of a cylinder oscillating in still water,” PhD thesis, Department of Engineering Science and Mechanics, Iowa State University, Ames, Iowa.
14.
Sarpkaya, T. (1976). “In‐line and transverse forces on smooth and sand‐roughened cylinders in oscillatory flow at high Reynolds numbers.” Naval Postgraduate School Tech. Rep. No. NPS‐69SL76062, Monterey, Calif.
15.
Sarpkaya, T. (1979). “Vortex‐induced oscillations—a selective review.” J. Appl. Mech., 46(2), 241–257.
16.
Sarpkaya, T., and Isaacson, M. (1981). “Mechanics of wave forces on offshore structures.” Van Nostrand Reinhold, New York, N.Y.
17.
Sumer, B. M., and Fredsøe, J. (1988). “Transverse vibrations of an elastically mounted cylinder exposed to an oscillating flow.” J. Offshore Mech. and Arctic Engrg., 110 (Nov.), 387–394.
18.
Sumer, B. M., and Fredsøe, J. (1989). “Effect of Reynolds number on vibrations of cylinders.” J. Offshore Mech. and Arctic Engrg., 111(May), 131–137.
19.
Sumer, B. M., Fredsøe, J., Gravesen, H., and Bruschi, R. (1989). “Response of marine pipelines in scour trenches.” J. Waterway, Port, Coast. and Oc. Engrg., ASCE, 115(4), 477–496.
20.
Sumer, B. M., Fredsøe, J., and Jacobsen, V. (1986). “Transverse vibrations of a pipeline exposed to waves.” Proc., 5th Int. Offshore Mech. and Arctic Engrg. Symp., ASME, New York, N.Y., 588–596.
21.
Sumer, B. M., Jensen, B. L., and Fredsøe, J. (1991). “Effect of a plane boundary on oscillatory flow around a circular cylinder.” J. of Fluid Mech., 225, 271–300.
22.
Sumer, B. M., and Kozakiewicz, A. (1994). “Visualization of flow around cylinders in irregular waves.” Proc., 4th Int. Offshore and Polar Engrg. Conf., Osaka, Japan, April 10–15, 1994, International Society of Offshore and Polar Engineers (ISOPE), Golden, Colo., Vol. III, 413–420.
Information & Authors
Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 120 • Issue 6 • November 1994
Pages: 515 - 534
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Aug 20, 1993
Published online: Nov 1, 1994
Published in print: Nov 1994
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.