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Power and thrust measurements of marine current turbines under various hydrodynamic flow conditions in a cavitation tunnel and a towing tank

Author

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  • Bahaj, A.S.
  • Molland, A.F.
  • Chaplin, J.R.
  • Batten, W.M.J.

Abstract

The results of cavitation tunnel and tank tests on an 800mm diameter model of a marine current turbine (MCT) are presented. The tests were carried out in a 2.4m×1.2m cavitation tunnel and the 60m towing tank. Results for power and thrust coefficients are presented for a range of tip speed ratio and pitch settings for various conditions. The results of this investigation provided an insight into the operation of a singe turbine in straight or yawed flow, the effect on performance of changes in the tip immersion of the rotor, the interference between twin rotors and the likely areas of cavitation inception. In addition, the analysed results presented provide useful information for the hydrodynamic design of MCTs and detailed data for the validation of numerical models.

Suggested Citation

  • Bahaj, A.S. & Molland, A.F. & Chaplin, J.R. & Batten, W.M.J., 2007. "Power and thrust measurements of marine current turbines under various hydrodynamic flow conditions in a cavitation tunnel and a towing tank," Renewable Energy, Elsevier, vol. 32(3), pages 407-426.
    • Handle: RePEc:eee:renene:v:32:y:2007:i:3:p:407-426
    DOI: 10.1016/j.renene.2006.01.012
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    References listed on IDEAS

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    1. Batten, W.M.J. & Bahaj, A.S. & Molland, A.F. & Chaplin, J.R., 2006. "Hydrodynamics of marine current turbines," Renewable Energy, Elsevier, vol. 31(2), pages 249-256.
    2. Bahaj, A.S. & Myers, L., 2004. "Analytical estimates of the energy yield potential from the Alderney Race (Channel Islands) using marine current energy converters," Renewable Energy, Elsevier, vol. 29(12), pages 1931-1945.
    3. Myers, L. & Bahaj, A.S., 2005. "Simulated electrical power potential harnessed by marine current turbine arrays in the Alderney Race," Renewable Energy, Elsevier, vol. 30(11), pages 1713-1731.
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