Tidal Energy Feasibility Study and Turbine Design for Malolo Island

Joyce, Naomi and Deo, Ashneel and Ahmed, Mohammed R. (2020) Tidal Energy Feasibility Study and Turbine Design for Malolo Island. [Conference Proceedings]

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Abstract

Tidal current turbines have high potential for off-grid
applications in Pacific Island nations due to the coastal
proximity of the population. In this study, the feasibility of tidal current power extraction in a channel near Malolo Island, Fiji, was investigated. An Acoustic Doppler Current Profiler was used to collect 70 days of velocity data and the power density was estimated. Using a combination of Computational Fluid Dynamics and Blade Element Momentum theory, an array of bi-directional ducted horizontal axis tidal turbines was designed for the location. The analysis of the measured data indicated low power density; however, novel contributions were made, including quantification of the tidal resource at this previously unquantified site, design of a new hydrofoil with good hydrodynamic properties and optimised design of a constriction duct which significantly increased the power output.

Item Type:	Conference Proceedings
Uncontrolled Keywords:	Tidal energy; Feasibility study; Hydrofoil; Turbine design; Annual energy production.
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	School of Information Technology, Engineering, Mathematics and Physics (STEMP)
Depositing User:	M. Rafiuddin Ahmed
Date Deposited:	20 Sep 2021 03:30
Last Modified:	28 Mar 2022 03:49
URI:	https://repository.usp.ac.fj/id/eprint/12987

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