Design and testing of a contra-rotating tidal current turbine
Clarke, J. A. and Connor, G and Grant, A. D. and Johnstone, C. M. (2007) Design and testing of a contra-rotating tidal current turbine. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 221 (A2). pp. 171-179. ISSN 0957-6509
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Abstract
A contra-rotating marine current turbine has a number of attractive features: nearzero reactive torque on the support structure, near-zero swirl in the wake, and high relative inter-rotor rotational speeds. Modified blade element modelling theory has been used to design and predict the characteristics of such a turbine, and a model turbine and test rig have been constructed. Tests in a towing tank demonstrated the feasibility of the concept. Power coefficients were high for such a small model and in excellent agreement with predictions, confirming the accuracy of the computational modelling procedures. High-frequency blade loading data were obtained in the course of the experiments. These show the anticipated dynamic components for a contra-rotating machine. Flow visualization of the wake verified the lack of swirl behind the turbine. A larger machine is presently under construction for sea trials.
Creators(s): |
Clarke, J. A. ![]() ![]() | Item type: | Article |
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ID code: | 5037 |
Keywords: | marine currents, turbine, contra-rotating, model tests, energy, mechanical engineering, energy systems, Mechanical engineering and machinery, Energy Engineering and Power Technology, Mechanical Engineering |
Subjects: | Technology > Mechanical engineering and machinery |
Department: | Faculty of Engineering > Mechanical and Aerospace Engineering |
Depositing user: | Strathprints Administrator |
Date deposited: | 20 Dec 2007 |
Last modified: | 06 Mar 2021 01:43 |
URI: | https://strathprints.strath.ac.uk/id/eprint/5037 |
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