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Energies 2017, 10(5), 702;

Scale-Model Experiments for the Surface Wave Influence on a Submerged Floating Ocean-Current Turbine

Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan
Author to whom correspondence should be addressed.
Academic Editor: Aristides Kiprakis
Received: 24 February 2017 / Revised: 11 May 2017 / Accepted: 12 May 2017 / Published: 16 May 2017
(This article belongs to the Special Issue Marine Energy)
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In order to harness the kinetic energy of marine currents, we propose a novel ocean-current turbine with a horizontal axis. The turbine can be moored to the seabed and function similarly to kites in a water flow. To operate such turbines in a marine current, the resulting rotor torque needs to be canceled. Therefore, the proposed turbine is designed with a float at its top and a counterweight at its bottom. Thus far, we have verified the turbine stability and blade performance through towing experiments. As the next step, we constructed a scale-model turbine to confirm the mooring system. This experiment was performed at a circulating water channel with wave-making facilities. The influence of waves on the floating body was also investigated. In this paper, we report the behavior of the scale-model turbine moored to the tank bottom and discuss the influence of surface waves. View Full-Text
Keywords: ocean current; ocean-current turbine; ocean energy ocean current; ocean-current turbine; ocean energy

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Shirasawa, K.; Minami, J.; Shintake, T. Scale-Model Experiments for the Surface Wave Influence on a Submerged Floating Ocean-Current Turbine. Energies 2017, 10, 702.

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