Numerical and experimental modelling of a modified version of the Edinburgh Duck wave energy device

This paper presents recent numerical studies conducted at The University of Edinburgh related to a modified version of the Edinburgh duck wave energy converter. Its purpose is seawater desalination rather than electricity production, but under the assumptions taken the results can be applied to both...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part M, Journal of engineering for the maritime environment Journal of engineering for the maritime environment, 2006-09, Vol.220 (3), p.129-147
Main Authors: Cruz, J M B P, Salter, S H
Format: Article
Language:English
Subjects:
Axes of rotation
Boundary element method
Circular cylinders
Desalination
Energy
Hydrodynamic coefficients
Innovations
Linear waves
Mathematical models
Pitching
Pitching motion
Renewable resources
Rotation
Seawater
Submergence
Turbine engines
Water desalting
Waterfowl
Wave energy
Wave power
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents recent numerical studies conducted at The University of Edinburgh related to a modified version of the Edinburgh duck wave energy converter. Its purpose is seawater desalination rather than electricity production, but under the assumptions taken the results can be applied to both versions. From the design point of view, the key innovation is the change of the shape of the device. Wave energy can be converted into useful work by the same pitching motion by means of a circular cylinder with an offset axis of rotation without the front beak, allowing significant cost reduction. The results to be presented were obtained using the Boundary Element Method (BEM) package WAMIT, based on linear wave theory. The hydrodynamic behaviour of the device is assessed, allowing comparisons with experimental work on a 1:33 scale model. Full-scale figures are also presented. The influences of both the position of the axis of rotation and the submergence ratio are evaluated. A total of ten different configurations, each for two different submergence ratios, are analyzed. Focus is given to the hydrodynamic coefficients, the wave exciting force, the response amplitude operator (body motions), and the relative capture width.
ISSN:1475-0902
2041-3084
DOI:10.1243/14750902JEME53