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http://dx.doi.org/10.5394/KINPR.2014.38.5.503

Numerical Analysis of Reflection Characteristics of Perforated Breakwater with a Resonant Channel  

Kim, Jeong-Seok (Department of Convergence Study on Ocean Science and Technology, Korea Maritime and Ocean University)
Seo, Ji-Hye (Department of Convergence Study on Ocean Science and Technology, Korea Maritime and Ocean University)
Lee, Joong-Woo (Division of Civil Engineering and SOST, Korea Maritime and Ocean University)
Park, Woo-Sun (Coastal Development & Ocean Energy Research Division, Korea Institute of Ocean Science and Technology)
Publication Information
Journal of Navigation and Port Research / v.38, no.5, 2014 , pp. 503-509 More about this Journal
Abstract
In this study, a new concept perforated breakwater is proposed, which is having resonant channels. In the channel, perforated plate is installed for dissipating wave energy induced by flow separations. The breakwater has two advantages compared with conventional perforated breakwater having wave chamber with slotted walls. One is easy to control the target wave condition for dissipating wave energy, and the other is having the high structural safety because the structural members are not exposed to impact waves, directly. To evaluate wave reflection characteristics of the proposed breakwater, numerical experiment was carried out by using Galerkin's finite element model based on the linear potential theory. The results indicated that considerable energy dissipation occurs near the resonant period of channel, and wave reflection characteristics are affected by channel shape, location and opening ratio.
Keywords
wave reflection; resonant channel; perforated breakwater; numerical analysis; finite element method; linear potential;
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