2D Wave setup behind submerged breakwaters |
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| Authors: | M Calabrese D Vicinanza M Buccino |
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| Institution: | aDepartment of Hydraulic and Environmental Engineering, University of Naples “Federico II”, Via Claudio 21, 80125 Naples, Italy;bDepartment of Civil Engineering, Second University of Naples, Via Roma 29, 81031 Aversa (Caserta), Italy |
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| Abstract: | In addition to reducing the incoming wave energy, submerged breakwaters also cause a setup of the sea level in the protected area, which is relevant to the whole shadow zone circulation, including alongshore currents and seaward flows through the gaps. This study examines such a leading hydraulic parameter under the simplified hypothesis of 2D motion and presents a prediction model that has been validated by a wide ensemble of experimental data. Starting from an approach originally proposed by Dalrymple and Dean (1971). Piling-up behind low and submerged permeable breakwaters. Discussion note on Diskin et al. (1970). Journal of Waterways and Harbors Division WW2, 423–427], the model splits the rise of the mean water level into two contributions: one is due to the momentum flux release forced by wave breaking on the structure, and the other is associated with the mass transport process. For the first time, the case of random wave trains has been explicitly considered. |
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| Keywords: | Submerged breakwaters Hydraulic response Large wave flume Small wave flume Wave setup |
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