Wave power

About: Wave power is a research topic. Over the lifetime, 2671 publications have been published within this topic receiving 41439 citations. The topic is also known as: wind wave energy & sea wave energy.

Model-based selection of full-scale Wells turbines for ocean wave energy conversion and prediction of their aerodynamic and acoustic performances:

Abstract: One of the most intensively studied principles of harnessing the energy from ocean waves is the oscillating water column device. The oscillating water column converts the motion of the water waves into a bi-directional airflow, which in turn drives an air turbine. The bi-directional axial Wells turbine as a candidate for oscillating water column power take-off systems was the object of considerable research conducted in the last decades. However, there is a lack of consistent data to support practical design considerations when pre-selecting a turbine for an oscillating water column power plant. Furthermore, to minimize the overall environmental impact of this technology requires the assessment of the aero-acoustic noise associated with a Wells turbine’s operation. The effect of cascade solidity and hub-to-tip ratio on the aero-acoustic performance of Wells turbine rotors is assessed systematically by numerical simulations and model scale testing. Based on the data from the study on these generic design p...

Wave energy conversion of oscillating water column devices including air compressibility

Abstract: This paper presents an investigation on air compressibility in the air chamber and its effects on the power conversion of oscillating water column (OWC) devices. As it is well known that for practical OWC plants, their air chambers may be large enough for accommodating significant air compressibility, the “spring effect,” an effect that is frequently and simply regarded to store and release energy during the reciprocating process of a wave cycle. Its insight effects on the device's performance and power conversion, however, have not been studied in detail. This research will investigate the phenomena with a special focus on the effects of air compressibility on wave energy conversion. Air compressibility itself is a complicated nonlinear process in nature, but it can be linearised for numerical simulations under certain assumptions for frequency domain analysis. In this research work, air compressibility in the OWC devices is first linearised and further coupled with the hydrodynamics of the OWC. It is ab...

Sea-based hydrogen-oxygen generation system

Abstract: A method for generation of gasses contained in a salt solution in accomplished by disposing automated, floating wave power collection vessels in waters distant from shore, the vessels navigating within one or more predetermined geographic zones, having suitable wave conditions for such operation. The wave power devices generating electricity and the gasses are extracted from the salt solution by electrolysis. Automated storage vessels are used as shuttles to deliver the gasses to shore facilities.