Wave power extraction and coastal protection by a periodic array of oscillating buoys embedded in a breakwater

The integration of wave energy devices and coastal structures may be an innovative sustainable way to achieve production purposes with a secondary benefit protection, which can increase accessibility reduce the costs technology. In this paper, 3-D theoretical model was developed investigate hydrodynamic efficiency breakwater function periodic array oscillating buoys embedded in caisson breakwater. generalized radiation problem solved derive force. validated using Haskind's relation flux conservation law. influences wave/geometrical parameters PTO damping were revealed. particular, phenomenon multiple orders reflected transmitted propagating waves their influence on power extraction protection examined. Results show that satisfactory defense are realized simultaneously under oblique for proposed system. A decline is found beyond critical wavenumber, accompanied by occurrence strong reflection phenomenon. findings paper contribute towards preliminary design hybrid breakwater-WEC system synergy effect between breakwaters.