A semi-empirical model for surf zone wave height decay is adapted to the parabolic equation method in order to include the effect of depth-limited wave breaking in combined refraction/diffraction calculations. Several examples for plane beaches are presented in order to show correspondence between the empirical model, its numerical formulation, and previous laboratory data. The model is then ap...

Combining multiple-types of Wave Energy Converters (WECs) and integrating them into in-development or pre-existing marine platforms can reduce the total Levelised Cost (LCoE) by sharing infrastructures maintenance costs. The current study proposes an innovative multi-purpose solution deploying Oscillating Buoy (OB) device inside chamber Water Column (OWC) WEC integrated a π-type floating breakw...

This paper considers the history of oscillating water column (OWC) systems from whistling buoys to grid-connected power generation systems. The power conversion from the wave resource through to electricity via pneumatic and shaft power is discussed in general terms and with specific reference to Voith Hydro Wavegen’s land installed marine energy transformer (LIMPET) plant on the Scottish islan...

Based on the linear wave theory, the mild-slope equation (MSE) is a preferable mathematical model to simulate the wave propagation nearshore. On the basis of developed self-adaptive finite element model, an interative method is used to determine the wave direction angle to the boundary and to improve the treatment of the boundary conditions. Thus a numerical model to solve MSE is developed in t...

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...