Design of low drag-to-power ratio hydrokinetic turbine
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Inclou dades d'ús des de 2022
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hdl:2117/330011
Tipus de documentText en actes de congrés
Data publicació2019
EditorCIMNE
Condicions d'accésAccés obert
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Abstract
The abundant power in tidal current is a reliable source of renewable energy for electricity production in coastal areas. With Deep Green technology, Minesto has presented a cost-effective unique approach to extract energy even from low speed water currents and increase the potential of ocean energy extraction. In PowerKite project, funded by EU Horizon 2020, we designed and tested a special type of horizontal axis hydrokinetic turbine for Minesto’s tidal kite. The operational condition for this turbine is very different from stationary hydrokinetic turbines due to correlation between the kite’s maneuvering speed, turbine drag and power production. In this paper, we present the procedure of turbine blade design for reducing drag forces while producing maximum torque. We used OpenProp, a lifting line method open-source code, combined with CAESES modeler to establish the design space. To select the suitable design parameters with regard to cavitation and viscous effect, we also used RANS CFD solver OpenFOAM and improved the turbine performance. Computational studies as well as experimental test in cavitation tunnel are presented and the result is compared with a baseline turbine performance. The new design is currently being evaluated in sea-trial with a quarter-scale kite.
CitacióShiri, A.; Hallander, J.; Bergqvist, B. Design of low drag-to-power ratio hydrokinetic turbine. A: MARINE VIII. "MARINE VIII : proceedings of the VIII International Conference on Computational Methods in Marine Engineering". CIMNE, 2019, p. 441-452. ISBN 978-84-949194-3-5.
ISBN978-84-949194-3-5
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