Author(s): Fatemeh Hajivalie; Maximilian Streicher; Yuri Pepi; Ton Van Der Plas; Bert Van Den Berg; Peter Troch

Linked Author(s): Peter Troch, Fatemeh Hajivalie

Keywords: Wave Overtopping; Relative Freeboard; Wave Period; Non-Dimensional Parameter; Prediction Formul

Abstract: Wave overtopping phenomenon on vertical breakwaters is influenced by various physical parameters, encompassing wave height, period, water depth at the breakwater, breakwater freeboard, and foreshore steepness. Existing equations for estimating overtopping rates predominantly rely on the relative freeboard (Rc/Hm0) as the key parameter. This study highlights a significant deviation from this conventional approach when utilizing a recurved wall instead of a plain vertical wall, emphasizing the necessity to consider additional parameters, particularly wave period. In our quest for enhanced accuracy in estimating wave overtopping over recurved breakwaters, we have used F'=Rc/ (Hm02 Lp) 1/3, as a replacement for the conventional relative freeboard. Comparative analyses reveal that the proposed formulas for both impulsive and non-impulsive waves exhibit superior accuracy compared to existing formulas. Nevertheless, it is noteworthy that, for larger relative freeboards, a robust formula for estimating wave overtopping remains elusive.

DOI: https://doi.org/10.59490/coastlab.2024.705

Year: 2024