Abstract
A breakwater with inclined perforated slots (BIPS) is proposed to ensure harbor safety and good water quality. In this study, a series of laboratory experiments and a computational fluid dynamics numerical model were conducted to investigate the hydrodynamic behavior of a breakwater with three inclined perforated slots in regular waves. The wave reflection coefficient Kr, wave transmission coefficient Kt, wave energy dissipation coefficient KL and dimensionless value of total water flow rate Q′ were examined with the related parameters, including wave parameters and perforated ratio of BIPS. It is found that with increasing wave steepness, Kr and Kt values decrease, however KL and Q′ values increase. With increasing ratio of the distance between wave flume bottom and middle slot exit to the still water depth, the Kr values increase, whereas the Kt, KL and Q′ values decrease. With increasing perforated ratio, the Kr values decrease, whereas the Kt, KL, and Q′ values increase. In addition, a series of dimensionless parameters of incident waves and BIPS are used to conduct the formulas for predicting the hydrodynamic coefficients and the dimensionless value of total water flow rate through slots with an acceptable accuracy.
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