Flexible Dual Membrane Wave Barrier
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 124, Issue 5
Abstract
This paper discusses the performance of a wave barrier consisting of two vertical flexible membranes spaced at a fixed distance apart. The interaction of the membrane system with uniform incident water waves is investigated within the context of two-dimensional linear wave theory. The membranes extend the entire water depth and are tensioned and pinned at both the surface and the seabed. Analytic solutions are developed using eigenfunction expansions for the velocity potential and linear membrane theory. It is found that the transmission and reflection characteristics are highly sensitive to the membrane spacing and tension. These parameters offer the opportunity to tune the barrier system for achieving low energy transmission at a lower membrane tension as compared with a single membrane, and to reflect waves over selected frequency bands. Additional reductions in the transmitted wave energy from viscoelastic dissipation within the membrane are found to be small.
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References
1.
Abul-Azm, A. G.(1994). “Wave diffraction by double flexible breakwaters.”Appl. Ocean Res., Elsevier, U.K., 16, 87–99.
2.
Broderick, L. L., and Jenkins, C. H.(1993). “Experimental investigation of fluid-filled membrane breakwaters.”J. Wtrwy., Port, Coast., and Oc. Engrg., ASCE, 119(6), 639–656.
3.
Drimer, N., Agnon, Y., and Stiassnie, M.(1992). “A simplified analytical model for a floating breakwater in water of finite depth.”Appl. Ocean Res., Elsevier, U.K., 14, 33–41.
4.
Fitzgerald, E. R. (1995). “Increased damping of natural rubber stocks from prior elongation-retraction.”Proc., Passive Damping, SPIE Smart Structures and Materials Conf., Vol. 2445, Society of Photo-Optical Instrumentation Engineers, San Diego, Calif., 266–275.
5.
Kee, S. T., and Kim, M. H.(1997). “Flexible membrane wave barrier. II: Floating/submerged buoy-membrane system.”J. Wtrwy., Port, Coast., and Oc. Engrg., ASCE, 123(2), 82–90.
6.
Kim, M. H., Edge, B. L., Kee, S. T., and Zhang, L. (1996). “Performance evaluation of buoy-membrane wave barriers.”Proc., 25 Int. Conf. Coastal Engrg., Vol. 2, 2087–2100.
7.
Kim, M. H., and Kee, S. T.(1996). “Flexible-membrane wave barrier. I: Analytic and numerical solutions.”J. Wtrwy., Port, Coast., and Oc. Engrg., ASCE, 122(1), 46–53.
8.
Leach, P. A., McDougal, W. G., and Sollitt, C. K.(1985). “Hinged floating breakwater.”J. Wtrwy., Port, Coast., and Oc. Engrg., ASCE, 111(5), 895–909.
9.
Lee, J. F., and Chen, C. J.(1990). “Wave interaction with hinged flexible breakwater.”J. Hydr. Res., IAHR, Delft, The Netherlands, 28(3), 283–295.
10.
McCartney, B. L.(1985). “Floating breakwater design.”J. Wtrwy., Port, Coast., and Oc. Engrg., ASCE, 111(2), 304–318.
11.
Williams, A. N.(1993). “Dual floating breakwater.”Ocean Engrg., Pergamon Press, U.K., 20(3), 215–232.
12.
Williams, A. N., and McDougal, W. G.(1996). “A dynamic submerged breakwater.”J. Wtrwy., Port, Coast., and Oc. Engrg., ASCE, 122(6), 288–296.
13.
Williams, A. N., Geiger, P. T., and McDougal, W. G.(1991). “Flexible floating breakwater.”J. Wtrwy., Port, Coast., and Oc. Engrg., ASCE, 117(5), 429–450.
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Copyright © 1998 American Society of Civil Engineers.
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Published online: Sep 1, 1998
Published in print: Sep 1998
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