WAVE REDUCTION ABILITY PASSING OVER SUBMERGED BREAKWATER USING POROUS CONCRETE BY FLOW-3D SOFTWARE

Abstract

This paper presents the results of a study on the wave height reduction efficiency of submerged breakwaters constructed from porous concrete structures (PCSB), using FLOW-3D software. The simulations were conducted on a model with dimensions of 45 m (length) × 1.0 m (width) × 1.5 m (height) and included four groups of scenarios: variations in porosity, the freeboard to incident wave height ratio (S/H), the crest width to wave length ratio (B/L), and the slope of the structure. The simulation results were calibrated against experimental data from different cross-sections, demonstrating strong compatibility. This study clarifies the mechanisms of wave propagation and absorption as they pass over PCSB. When properly designed, the wave reduction efficiency of PCSB is quantified by the coefficient of transmitted wave height to incident wave height, illustrating the practical applicability of these structures. The FLOW-3D software employed in this research serves as an effective tool for analyzing wave deformation over PCSB, significantly contributing to the design of these structures as effective coastal protection measures.