Abstract
In recent years attention has been focused on means of extracting energy from ocean waves. As a result, a number of systems have been devised by means of which wave energy, which consists of potential and kinetic fluid energy, can be captured and transformed into either mechanical, hydraulic or electrical energy. The majority of the systems transform the wave motion into a reciprocating motion of a mechanical system which in turn drives some other form of energy transformation system finally yielding electric or hydraulic energy. The selection of a reciprocating system to transform wave motion into mechanical motion is an obvious choice when the waves are interpreted in terms of being a free-surface phenomenon. It can be shown however, that it is possible to transform wave energy directly into rotational mechanical energy based on a different viewpoint of wave motion. In this paper the fundamental characteristics of such device are discussed and a mathematical model developed at the Delft University of Technology describing the properties of the device will be verified by means of results of model tests carried out at the Maritime Research Institute Netherlands.
Published Version
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