Water Waves on Crown Breakwaters
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 119, Issue 4
Abstract
The linear theory for waves impinging obliquely on a vertical, porous breakwater with an impermeable crown is examined. The wave‐induced flow within the breakwater is modeled by the 1972 theory of Sollitt and Cross. Using eigen‐function expansions for the velocity potentials seaward of the breakwater, beneath the crown, and behind the structure, the reflection and transmission coefficients are calculated to determine the sheltering provided by the breakwater. The results agree well with other methods, including a plane wave analysis, obtained by neglecting the evanescent wave modes. The distribution of the wave‐induced pressure along the base of the crown is also calculated, showing that the linear pressure gradient assumption usually applied for uplift forces on the breakwater crown is inaccurate.
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Information & Authors
Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 119 • Issue 4 • July 1993
Pages: 367 - 380
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Mar 15, 1991
Published online: Jul 1, 1993
Published in print: Jul 1993
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