Wave Overtopping Generated Flow Through Offshore Breakwater Gaps
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 115, Issue 3
Abstract
This note describes a simplified method for estimating the flow rate and flow velocity through the gaps of permeable offshore segmented breakwaters caused by wave overtopping. The method incorporates previous two-dimensional laboratory tests and resulting empirical equations for estimating ponding (setup) behind the breakwater. Factors that can be investigated using this method are the influence of breakwater freeboard, wave height and period, breakwater length and spacing, number of breakwaters, distance offshore, water depth at the breakwater, and shore attachment on the flow rate. Other wave effects on hydraulics, such as diffraction, refraction, reflection, and wave-current interactions, have not been considered. The method can be extended to other similar situations via laboratory testing and/or analytical results on flow through and over breakwaters.
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References
1.
Dalrymple, R. A. (1978). “Rip currents and their causes.” Proc. 16th Coastal Engrg. Conf., ASCE, 1414–1427.
2.
Diskin, M., Vajda, M., and Amir, I. (1970). “Piling‐up behind low and submerged permeable breakwaters.” J. Wtrwy. and Harb. Div., ASCE, 96(2), 359–372.
3.
Hjulstrom, F. (1935). Morphological activity of rivers as illustrated by rivers fyris.” Bull. Geol. Inst. Uppsala, Vol. 25.
4.
King, H. W., and Brater, E. F. (1963). Handbook of hydraulics. 5th Ed., McGraw‐Hill Book Co., New York, N.Y.
5.
Longuet‐Higgins, M. S. (1967). “On the wave‐induced difference in mean sea level between the two sides of a submerged breakwater.” J. Mar. Res., 25(2), 148–153.
6.
Madsen, O. S., and Grant, W. D. (1976). “Quantitative description of sediment transport by waves.” Proc. 15th Coastal Engrg. Conf., ASCE, 1093–1112.
7.
Shore protection manual. (1984). 4th Ed., Vols. I and II, Coastal Engineering Research Center, U.S. Army Corps of Engineers, U.S. Government Printing Office, Washington, D.C.
8.
Weggel, J. R. (1976). “Wave overtopping equation.” Proc. 15th Coastal Engrg. Conf., ASCE, 2737–2755.
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Copyright © 1989 ASCE.
History
Published online: May 1, 1989
Published in print: May 1989
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