Experimental Study on Floating Breakwater Anchored by Piles

Abstract

: Floating breakwaters are applied in order to minimize material cost but still can reduce wave height. In this paper we investigated floating breakwater anchored by piles based on experimental study in the laboratory with model scale 1 : 13. Two types of floating model were tested with several combination wave height, wave period and surface water elevation to determined transmission coefficient. This experimental study proved that floating breakwater with piles can prevent wave height up to 27 cm. The physical model shows that ratio of depth to wave length is less than 0.6 and ratio of model width to wave length is less than 0.3. It is confirmed that if those ratio less than those value the transmission coefficient is higher than 0.5. The result also shown that the first type model of floating breakwater can reduce wave height to 60.4 % while the second one can reduce up to 55.56 %.