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The Effect of Series Assymetrical Submerged Structures on the Wave Deformation in Coastal Area

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Document pages: 9 pages

Abstract: This study aims to understand the characteristics of wave deformation, especially wave transmission and reflection due to the influence of a series of asymmetrical sink structures based on transition waters. This research was conducted at the beach engineering research laboratory of the Hasanuddin University Faculty of Engineering on the Gowa Campus. Physical modeling at 30 cm width and 15 m length of transparent water tank with a geometric scale of 1: 20 is used to simulate the influence of the structure density (ζ), the length of the structural series (B), height and wavelength (Hi and L) and the relative depth of water above the structure (d ) of the coefficient of transmission and reflection of waves (Kt and Kr) in 3 asymmetrical structures, namely rectangles, triangles and semicircles. Dimensional analysis is used to formulate the dimensionless parameter relationships as the final result of the study. The results showed that the three forms were able to reduce the transmission wave height. Found the coefficient of the shape of the triangle structure at Kt of 0.8 and at Kr is 0.4; while the semicircular coefficient on Kt is 0.9 and on Kr is 0.5. The final result of the study was obtained empirical equation Kt and Kr.

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