Abstract
Artificial revetments are commonly constructed on reef-flats to protect the rear infrastructure. Evaluating the performance of a revetment under extreme wave conditions requires accurate prediction of wave overtopping. To simulate tsunami wave overtopping on an artificial revetment above a coral reef-flat, a numerical model based on the weakly compressible smoothed particle hydrodynamics (WCSPH) method is developed. This numerical model includes an additional dissipative term in the continuity equation and a dynamic boundary condition enhancement to correct the pressure distortion from particles at the boundary. Reef topography is simplified as a steep reef-face and a horizontal reef-flat, and tsunami waves are described as solitary waves. This research explores the characteristics of solitary wave overtopping on the revetment above the reef-flat with varying slope angles and reef-flat lengths.
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