Kelly, Thomas and Dooley, Thomas and Ringwood, John (2017) Experimental Determination of the Hydrodynamic Parameters of an OWC. Proceedings of the 12th European Wave and Tidal Energy Conference 27th Aug -1st Sept 2017 (915). pp. 1-10. ISSN 2309-1983

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Abstract

A novel technique to measure the frequency-dependent hydrodynamic parameters of an oscillating water column (OWC) using tank testing is proposed. This technique arose from investigations into the effect on the power absorbed by OWCs of air compressibility in the chamber above the water column. Two models of an OWC were constructed for that investigation. For the first model, the volume of the air chamber above the water column was scaled geometrically by the factor to which the water column was scaled. For the second, the volume of the air chamber was scaled by the square of the factor to which the water column was scaled. The proposed technique to measure the hydrodynamic parameters,which eliminates the need for a forced-oscillation rig, uses these two OWC models, and relies on water column motion which takes place due to air compression when the air chamber of the second model is sealed from atmosphere. The technique described for monochromatic waves. Results obtained from the testing of an OWC are presented. Spectral methods are applied to the technique, and then implemented to measure the parameters of the model OWC. This allows multiple frequencies to be analysed using a single set of tests.

Item Type:	Article
Keywords:	Oscillating water column; air compressibility; hydrodynamic parameters; tank tests; spectral analysis;
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering Faculty of Science and Engineering > Research Institutes > Centre for Ocean Energy Research
Item ID:	12459
Depositing User:	Professor John Ringwood
Date Deposited:	18 Feb 2020 15:40
Journal or Publication Title:	Proceedings of the 12th European Wave and Tidal Energy Conference 27th Aug -1st Sept 2017
Publisher:	European Wave and Tidal Energy Conference 2017
Refereed:	Yes
URI:
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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