Study on hydrodynamic characteristics of a hybrid wind-wave energy system combing a composite bucket foundation and wave energy converter

In this paper, a new type of combined wind-wave system is proposed, that is, composite bucket foundation-oscillating buoy (CBF-OB) device. A three-dimensional numerical wave flume established by using the renormalization group k–ε model. The hydrodynamic characteristics around and power generation device are studied. relationship between parameters run-up pressure analyzed. absorption efficiency performance evaluated. results show in system, at 0°–135° CBF smaller than those presence only CBF, but near 180° ones larger CBF. rear side scattering parameters, more obvious phenomenon second peak, stronger nonlinearity CBF-OB system. proposed can significantly improve buoy, which be increased about 1.5–4.0 times compared with under action alone. There an optimal takeoff parameter, when damping parameter 500 N·s/m, to maximize