NUMERICAL MODELING OF WAVE OVERTOPPING OF COASTAL BREAKWATERS FOR BIMODAL SEA STATES WITH DEPTH-AVERAGED MODELS

To assess the safety of coastal infrastructures against marine hazards or to design coastal or harbor protections, wave overtopping rates for extreme sea-state conditions must be estimated. A usual practice is to use empirical formulas predicting average wave overtopping discharges for a given structure profile and sea-state conditions, with the state-of-the-art being the EurOtop manual (van der Meer et al., 2018). However, the configurations for which these formulas can be applied are in limited number, simplified, and assume a uniform breakwater profile in the longshore direction. The purpose of this work is to investigate the performance of simpler numerical models for the simulation of wave overtopping over coastal structures of simple profile, namely depth-averaged weakly-dispersive wave models.