Experimental Study of Wave Reflection in Breakwater Overtopping Catcher Model

Abstract

Breakwater overtopping catcher model is a breakwater or shore protection model, which can accommodate or catch wave overtopping. This breakwater model is different from most other conventional breakwater models, at the back of this breakwater model, an opening is made to form a reservoir. This reservoir serves to collect overtopping wave, which is then collected and released back to the sea through an energy conversion process. How many waves overflow at the peak of the breakwater model is strongly influenced by several factors, one of which is the wave characteristics. This research was carried out experimentally to determine the characteristics of the waves, especially the influence of wave steepness to the wave reflection coefficient. The experiment was carried out in a wave flume with regular wave generation. Variations of research carried out on variations in the model that is slope and freeboard and wave variations that is period and wave height. The results of the study show that the wave reflection coefficient decrease with the increase of wave steepness, it is also seen that steep slopes produce the largest wave reflection coefficient.

Wave Transformation on Wave Catcher Shore Protection – Dual Slope (WCSP-DS) Zig-Zag Model with Wave Focused Wall

“…The combination slopes of this wall are intended to accommodate wave runups that can produce large volumes of overtopping to be accommodated in the crest reservoir. This research is the development of a series of OWEC breakwater studies studied by Thaha et al at the Research Center for Coastal Engineering, Faculty of Engineering, Hasanuddin University, Indonesia [7], [8], [9], and [10]. The two problems mentioned above are the focus of the entire research series.…”