Chapter
Dec 31, 2015
Dissipation of Deep Water Waves by Hydraulic Breakwaters
Authors: R. E. Nece, E. P. Richey, and V. Seetharama RaoAuthor Affiliations
Publication: Coastal Engineering 1968
Abstract
Experimental results axe presented for a laboratory study of the effectiveness of hydraulic breakwaters in dissipating deep water waves. Test data are reported for a range of wave steepnesses for wave length: water depth ratios ranging from 0.375 to 1.343.
It is shown that the effectiveness of hydraulic breakwaters depends upon the steepness of the incident wave and upon the ratio of the momentum of the opposing surface current created by the breakwater to the momentum of the incident waves. Results also are compared with the theoretical predictions of Taylor which are appropriate to deep water waves.
Data are presented in a form allowing the determination of hydraulic breakwater manifold discharge characteristics in order to achieve specified attenuation for a particular incident wave. It is concluded that while the hydraulic breakwater is better adapted to deep water waves than to shallow water waves upon which prior studies of the device have concentrated, it is generally inefficient for most practical cases because of excess power requirements. Some possible field applications are indicated.
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Published In
Coastal Engineering 1968
Pages: 1032 - 1048
Copyright
© 1969 American Society of Civil Engineers.
History
Published online: Dec 31, 2015
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Authors
Affiliations
R. E. Nece
Professor of Civil Engineering, University of Washington, Seattle, Washington.
E. P. Richey
Associate Professor of Civil Engineering, University of Washington, Seattle, Washington.
V. Seetharama Rao
Hydraulic Engineer, Lewis-Redford-Engineers, Bellevue, Washington.
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