Random Wave Slamming on Cylinders
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 116, Issue 6
Abstract
This paper describes random wave forces acting on a fixed, slender, horizontal circular cylinder in the vicinity of the free surface, taking account of the intermittency of submergence and wave slamming. Expressions are derived for the probability density and the mean of the force maxima, and the calculation of the expected value of the single largest force maximum occurring within a given duration is also described. These various predictions are based on the assumptions of linear wave theory and a narrow‐band wave spectrum. Depending on the elevation of the cylinder and the wave height, the force maxima in individual waves may be associated with either inertia, combined drag‐inertia during complete submergence, the instant of complete submergence, partial submergence, or slamming. The probability density of force maxima incorporates force ranges within which the maxima are associated with one or other of these effects. Numerical results relating to these statistical properties are presented, and the effects of intermittent submergence and wave slamming are discussed.
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References
1.
Borgman, L. E. (1965). “Wave forces on piling for narrow band spectra.” J. Wtrwy. and Harb. Div., ASCE, 91(3), 65–90.
2.
Borgman, L. E. (1972). “Statistical models for ocean waves and wave forces.” Adv. Hydrosci., 8, 139–181.
3.
Greenhow, M., and Li, Y. (1987). “Added masses for circular cylinders near or penetrating fluid boundaries—Review, extension and application to water‐entry, exit and slamming.” Ocean Engrg., 14(4), 325–348.
4.
Isaacson, M., and Baldwin, J. (1990a). “Random wave forces near free surface.” J. Wtrwy., Port, Coast., and Oc. Engrg., ASCE, 116(2), 232–251.
5.
Isaacson, M., and Baldwin, J. (1990b). “Measured and predicted random wave forces near the free surface.” Appl. Oc. Res. (in press).
6.
Isaacson, M., and Subbiah, K. (1990). “Numerical simulation of random wave forces near the free surface.” J. Offshore Mech. and Arctic Engrg., ASME (in press).
7.
Kaplan, P. (1979). “Impact forces on horizontal members.” Proc. Civ. Engrg. in the Oceans IV, ASCE, San Francisco, Calif., 2, 716–731.
8.
Kaplan, P., and Silbert, M. N. (1976). “Impact forces on platform horizontal members in the splash zone.” Proc. Offshore Tech. Conf., Houston, Tex., Paper No. OTC 2498, 1, 749–758.
9.
Miller, B. L. (1980). “Wave slamming on offshore structures.” Rept. No. NMI‐R81, National Maritime Institute, Feltham, Middlesex, U.K.
10.
Ochi, M. K. (1982). “Stochastic analysis and probabilistic prediction of random seas.” Adv. in Hydrosci., 13, 217–365.
11.
Pajouhi, K., and Tung, C. C. (1975). “Statistics of random wave fields.” J. Wtrwy., Harb., and Coast. Engrg. Div., ASCE, 101(4), 435–449.
12.
Sarpkaya, T. (1978). “Wave impact loads on cylinders.” Proc. Offshore Tech. Conf., Houston, Tex., Paper No. OTC 3065, 1, 169–176.
13.
Sarpkaya, T., and Isaacson, M. (1981). Mechanics of wave forces on offshore structures. Van Nostrand Reinhold, New York, N.Y.
14.
Tung, C. C. (1975a). “Statistical properties of wave force.” J. Engrg. Mech. Div., ASCE, 100(1), 873–884.
15.
Tung, C. C. (1975b). “Statistical properties of the kinematics and dynamics of random gravity wave field.” J. Fluid Mech., 70, 251–255.
Information & Authors
Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 116 • Issue 6 • November 1990
Pages: 742 - 763
Copyright
Copyright © 1990 ASCE.
History
Published online: Nov 1, 1990
Published in print: Nov 1990
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