IJBTT

Wave Deformation on Sloping Hollow Breakwater

Wave Deformation on Sloping Hollow Breakwater
	© 2022 by IJETT Journal
	Volume-70 Issue-10
	Year of Publication : 2022
	Authors : A. Huddiankuwera, T. Rachman, M. A. Thaha, S. Dewa
	DOI : 10.14445/22315381/IJETT-V70I10P218

How to Cite?

A. Huddiankuwera, T. Rachman, M. A. Thaha, S. Dewa, "Wave Deformation on Sloping Hollow Breakwater," International Journal of Engineering Trends and Technology, vol. 70, no. 10, pp. 188-194, 2022. Crossref, https://doi.org/10.14445/22315381/IJETT-V70I10P218

Abstract
Hollow breakwaters have varied models as wave absorbers. The ability of hollow breakwaters to absorb a wave of energy becomes beneficial of hollow breakwaters in reducing incoming wave energy. Experiments were performed on a hollow-sloping breakwater model using the model parameters of the cavity shape. The cavity parameters are made in 3 variations, the ratio between the volume of the cavity and the volume of the hole (Vr/Vl) of 2.0; 2.5, and 3.1, and the ratio of cavity volume and volume of the breakwater body (Vr/Vs) is 0.11; 0.14 and 0.17. The wave parameters are wave height (H), wave period (T) 1.1, 1.3, and 1.5 seconds, and water depth (d) 30, 35, and 40 cm. The reflection coefficient (Cr) of the sloping hollow breakwater increases if the values of the wave steepness parameter (H/L), relative depth (d/L), cavity volume parameter (Vr/Vl) as well as the structure volume parameter (Vr/Vs) increase. The transmission coefficient (Ct) decreases if the values of the wave steepness parameter (H/L), relative depth (d/L), and cavity volume parameter (Vr/Vl), as well as the structure volume parameter (Vr/Vs) increase. Larger cavity volumes (Vr/Vl =3.1) dampen wave energy better than smaller ones (Vr/Vl= 2.0 – 2.5)

Keywords
Submerged breakwater, Wave reflection, Wave transmission.

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