Author(s): Clint Reyes; Patrick Cross; Zhenhua Huang
Linked Author(s): Zhenhua Huang
Keywords: Perforated Breakwater Oscillating water column Eigen-function expansion Potential flow
Abstract: Compared to traditional rubble mound breakwaters, perforated breakwaters are an ingenious new design that utilizes the generation of vortices to dampen and reduce the energy of the incoming waves. Combining this with an oscillating water column for extract wave energy, can further reduce the energy of the waves passing through the structure. As a breakwater, this allows for significant reduction of the transmitted wave, while extracting renewable energy that can be used to power nearby facilities. To achieve an optimal design either with the power output or the transmitted wave height, an analytical model is developed using the eigenfunction expansion matching method. Both the energy extraction and the pressure loss due to perforated slots are modeled using linear terms. Results show that by combining two dissipation mechanisms, one of which extracts power from the waves improves the extraction bandwidth, while retaining the energy dissipation benefits of a curtain breakwater.
Year: 2025