Attenuation of Wind-Generated Deep Water Waves by Vertical Jet Breakwaters

摘要

An investigation was undertaken to study the effects of vertical jet hydraulic and pneumatic breakwaters on wind-generated deep water waves. Experimental data were collected for each breakwater operating separately and in various combinations. Water surface elevations, recorded in analog form on magnetic tape, were then digitized and subsequently analyzed with the aid of a digital computer. Results indicate that the pneumatic breakwater is slightly more effective in attenuating deep water wind waves than the hydraulic breakwater. Also the effectiveness of both breakwaters operating in series was not as great as either breakwater operating alone. Furthermore, the breakwaters, whether operating separately or in combination, were found to attenuate random waves over the same frequency band. (Author)