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Wave Diffraction Patterns Behind Detached Breakwaters

by A. G. Abul-Azm, Cairo Univ, Giza, Egypt,
E. M. Heikal, Cairo Univ, Giza, Egypt,



Document Type: Proceeding Paper

Part of: Coastlines of the Mediterranean

Abstract:

This paper presents a theoretical model to examine the wave diffraction behind detached breakwaters subjected to regular oblique waves. The method of solution is an eigenfunction expansion technique, which is essentially that of Dalrymple and Martin (1990) presented to estimate the wave reflection through offshore breakwaters. The breakwater is assumed to be thin, impermeable, infinite and located in a uniform water depth, and the fluid is incompressible, inviscid, undergoing irrotational linear oblique waves. The diffraction parameter behind the breakwater, which represents the ratio between the actual and the incident wave heights, is calculated. Accuracy of the present model to estimate the diffraction parameter was tested by assuming different wave and structural parameters. Numerical results have shown a good agreement with those obtained from other theoretical models for different configurations.

Subject Headings: Wave diffraction | Coastal protection structures | Breakwaters | Water waves | Mathematical models | Parameters (statistics) | Sea water

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