Hydrodynamic Characteristics of Seaside Perforated Semicircular Breakwaters due to Random Waves
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 134, Issue 4
Abstract
The semicircular breakwater (SBW) is a composite breakwater consisting of a semicircular caisson resting on a rubble mound. The SBW function as a barrier dissipates the incident wave energy and creates tranquility on its leeside. The dynamic pressures due to random waves exerted on seaside perforated SBWs with 7, 11, and 17% of its exposed surface area with perforations were measured. The measured pressures are compared with experimental results of SBW without perforations. In addition, the forces exerted on the caisson alone are measured. The reflection coefficient, runup characteristics, measured total forces, and dynamic pressures in a dimensionless form are presented as a function of relative water depth. The tests were conducted for surface piercing conditions. The effect of the water depth, perforations, and rubble mound height on the above stated variables are brought out, the details of which are reported in this technical note.
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Acknowledgments
The writers are very grateful to the anonymous reviewers for their valuable comments, which were very much useful in improving the quality of this technical note. The results reported in this technical note are a part of the joint research project between the collaborating institutes—IIT Madras and University of Leipzig, Germany, sponsored by GTZ, Germany. The writers wish to express their thanks to the collaborating institutes for the testing facility provided and financial support. They also wish to thank the anonymous reviewers for their valuable comments, which have helped a lot in improving the quality of the technical note.
References
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 134 • Issue 4 • July 2008
Pages: 237 - 251
Copyright
© 2008 ASCE.
History
Received: Feb 28, 2007
Accepted: Dec 17, 2007
Published online: Jul 1, 2008
Published in print: Jul 2008
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