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Exploiting the orbital motion of water particles for energy extraction from the waves

Ahmed, Mohammed R. and Faizal, Mohammed and Prasad, K. and Lee, Y.H. and Kim, C.G. and Cho, Y.J. (2008) Exploiting the orbital motion of water particles for energy extraction from the waves. [Conference Proceedings]

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Abstract

In wave motion, the water particles are known to follow orbital paths. This orbital motion was used to drive five-bladed Savonius rotors. Experiments were performed on an array of four rotors placed in a two-dimensional (2-D) wave channel. The flow around the rotors was documented using particle image velocimetry measurements. The submergence of the rotors and the distance between them were varied, and the rotational speeds of the rotors (Nn) were recorded at different wave frequencies. It was found that rotational speeds increased with an increase in the wave frequency, as it amplified the wave height that increased the kinetic energy of the particles in their orbital motion. The rotational speeds decreased when the distance between the rotors increased. High rotational speeds are recorded when the array of the rotors is placed close to the water surface at the smallest centre-to-centre distance between the rotors.

Item Type: Conference Proceedings
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics
Depositing User: Ms Neha Harakh
Date Deposited: 17 Feb 2008 09:59
Last Modified: 23 Jul 2012 20:57
URI: http://repository.usp.ac.fj/id/eprint/869
UNSPECIFIED

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