Hydrodynamic Interactions Between Submerged Cylinders
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 113, Issue 4
Abstract
An approximate method is presented to investigate the hydrodynamic interactions between a pair of free‐standing, bottom‐mounted, flexible circular cylinders subjected to high‐frequency, horizontal ground motion. The cylinders are aligned parallel to the direction of ground excitation and the response of each is assumed to be one‐dimensional and governed by a beam equation. The solution technique for the fluid velocity potential uses the modified plane‐wave method and involves replacing divergent radiated and scat‐ tered waves by equivalent plane waves together with nonplanar correction terms. Numerical results are presented, which illustrate the influence of the various geometrical and material properties of the cylinders on the hydrodynamic loading and associated dynamic response for several pairs of example structures. It is found that the inclusion of fluid compressibility in the formulation leads to predictions of quite significant interactions between squatty cylinders at high frequencies, even at a relatively large spacing.
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References
1.
Abramowitz, M., and Stegun, I. A. (1968). Handbook of mathematical functions. Dover Publications, New York, N.Y.
2.
Abul‐Azm, A. G., and Williams, A. N. (1986). “Interference effects between flexible cylinders in waves.” Ocean Engrg., 14(1), 19–38.
3.
Goto, H., and Toki, K. (1965). “Vibration characteristics and aseismic design of submerged bridge piers.” Proc. Third World Conf. on Earthquake Engrg., Auckland, Wellington, New Zealand, II, 107–122.
4.
Liao, W.‐G. (1985). “Hydrodynamic interaction of flexible cylinders.” J. Wtrwy., Port, Coast., and Ocean Engrg., ASCE 111(4), APR., 719–731.
5.
Liaw, C.‐Y., and Chopra, A. K. (1974). “Dynamics of towers surrounded by water.” Earthquake Engrg. and Struct. Dynamics, 3(1), 33–49.
6.
McIver, P. (1984). “Wave forces on arrays of floating bodies.” J. Engrg. Math., 18(4), 273–285.
7.
McIver, P., and Evans, D. V. (1984). “Approximation of wave forces on cylinder arrays.” Appl. Ocean Res., 6(2), 101–107.
8.
Mei, C. C., Foda, M. A., and Tong, P. (1979). “Exact and hybrid‐element solutions for the vibration of a thin elastic structure seated on the sea‐bed.” Appl. Ocean Res., 1(2), 79–88.
9.
Simon, M. J. (1982). “Multiple scattering in arrays of axisymmetric wave energy devices, part 1: A matrix method using a plane‐wave approximation.” J. Fluid Mech., 120, 1–25.
10.
Tanaka, Y., and Hudspeth, R. T. (1986). “Earthquake response of circular cylindrical structures in water.” 5th int. Symp. on Offshore Mech. and Arctic Engrg., Tokyo, Japan, 655–662.
11.
Watson, G. N. (1944). A treatise on the theory of Bessel functions. 2nd ed., Cambridge Univ. Press, Cambridge, England.
12.
Williams, A. N. (1986). “Earthquake response of submerged circular cylinder.” Ocean Engrg., 13(6), 569–585.
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 113 • Issue 4 • July 1987
Pages: 364 - 379
Copyright
Copyright © 1987 ASCE.
History
Published online: Jul 1, 1987
Published in print: Jul 1987
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