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• W4321494691 endingPage "147509022311556" @default.
• W4321494691 startingPage "147509022311556" @default.
• W4321494691 abstract "Coastal erosion is a global concern that has been augmenting due to the natural evolution of beaches, human activities and sea-level rise. One of the eco-friendly shore protection methods is to dissipate the wave energy by constructing offshore breakwaters. Conical pile head breakwater (CPHB) is one of the eco-friendly innovative offshore structures consisting of closely spaced piles with an enlarged cross-sectional area (conical pile head) in the vicinity of the free surface. In the present study, perforations are incorporated over the conical pile head to achieve higher efficiency by promoting energy dissipation. The influence of the perforations on the performance characteristics, namely wave transmission (K t ), wave reflection (K r ) and energy dissipation (K d ) of the perforated CPHB is comprehensively investigated through physical model studies. The effect of perforations and their distribution around the pile head (Pa), percentage of perforation (P) and size of perforations (S/D) on the wave attenuation characteristics are evaluated to arrive at an optimum configuration. The study is carried out under monochromatic waves of varying wave height (0.06–0.16 m) and wave period (1.4–2 s) at different depths of water (0.35, 0.40 and 0.45 m). A minimum K t of 0.58 associated with K r of 0.26 and K d of 0.78 is obtained with an optimum configuration of Pa = 50%, P = 19.2% and S/D = 0.25. The K t of the proposed CPHB is about 19 to 35% lesser than that of the perforated hollow pile breakwater under matching test conditions. Overall, providing the perforations is found to be effective in enhancing the wave attenuation capability by up to 12.4%. Further, empirical equations are formulated and validated with the experimental data. The empirical equations estimate the K t and K r values accurately with a high coefficient of determination ( R 2 ≥ 0.90)." @default.
• W4321494691 created "2023-02-23" @default.
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• W4321494691 date "2023-02-22" @default.
• W4321494691 modified "2023-09-30" @default.
• W4321494691 title "Investigation on innovative pile head breakwater for coastal protection" @default.
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• W4321494691 doi "https://doi.org/10.1177/14750902231155677" @default.
• W4321494691 hasPublicationYear "2023" @default.
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