An experimental study on the wave control by environment-friendly artificial reef

Abstract

2-dimensional hydraulic model tests were conducted to investigate the wave control performance of the newly designed environment-friendly artificial reef in terms of a submerged breakwater with changing crest widths and freeboard heights. Transmission coefficients of the current model were inversely proportional to the crest width. The reflection coefficients were proportional to the freeboard heights. However, the coefficients were not so much changed with different crest widths. Especially, the model with the shorter crest width showed better performance in terms of wave control compared with the model from another study. However, the results showed that the performance of the submerged breakwater does not depend on the shape of individual block but the total shape of the submerged breakwater as the crest width increases. © 2011, World Scientific. All rights reserved.