Samoa is located in the South Pacific Ocean, about halfway between Hawaii and New Zealand. The first wharf at Apia (185m long) was constructed 1966 a 100m long breakwater with 8t Dolos armor units 1988-89 to provide shelter. Following large cyclones early 1990s, rehabilitated 1996 larger 20t units. In 2003 solid concrete crown wall added mitigate wave transmission into harbor. There limited toe...

The indispensable vital structure in any harbor is a breakwater in order to make available calm water region inshore. Pile breakwater can be employed as a small coastal protection structure where tranquility required is low. This study is concerned with CFD study on the performance of perforated hollow pile to dissipate wave energy and the novelty of this investigation is the role of perforatio...

In this paper wave transformation in a submerged sloped breakwater and its hydraulic performance was simulated by developing a numerical model in Fortran. The code was established by combining porous flow and a two-phase model using VOF method. Modified Navier-Stokes and k-ε equations implemented to the model to simulate the flow in porous media. Cut cell method was modified to simulate...

In this paper, the large amount of sedimentation and the resultant shoreline advancements at the breakwaters of Beris Fishery Port are studied. A series of numerical modeling of waves, sediment transport, and shoreline changes were conducted to predict the complicated equilibrium shoreline. The outputs show that the nearshore directions of wave components are not perpendicular to the coast whic...

Based on the open-source code DualSPHysics, a numerical model was conducted to simulate regular wave transformation slope breakwater with artificial block, and simulation results were verified according measured data from physical experiment. The deviation between less than 6% 9% in run-up overtopping, respectively, which demonstrated can reliably capture evolution an block. this model, size of...

A depth-averaged non-hydrostatic model is formulated to investigate wave evolution on a water channel with submerged trapezoidal breakwater. This an extension of nonlinear shallow equations that includes hydrodynamic pressure and vertical velocity. In the momentum equation, diffusion term also considered represent turbulence effects in system. The are solved numerically using combination stagge...

This paper investigates the wave transmission through artificial reefs utilised as low-crested breakwaters to mitigate coastal erosion and reduce energy. The study utilises DualSPHysics smoothed particle hydrodynamics (SPH) solver evaluate effectiveness of such structures. Wave coefficients were computed for various reef configurations conditions. Results indicate that shifted configuration pro...

nowadays, the application of floating breakwaters in small or recreational harbors has found more popularity. these types of breakwaters are more flexible in terms of design, configuration and especially installation compared with fixed breakwaters. in the current study, the performance of floating breakwater (fbs) under regular waves was studied using the physical modeling method. for the mode...

The necessity to implement solutions that guarantee the protection and recovery of coastal area makes submerged breakwater employment is evaluated as a viable variant application because these works contribute conservation natural aesthetic conditions beaches, which part tourist product marketed. However, parameters intervene in their functional design are not very well established, propitiatin...