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Experimental and Computational Investigation of the Drag of a Towed Hydropower Turbine

[+] Author Affiliations
G. T. Bryan, M. F. Platzer, Y. W. Kwon

Naval Postgraduate School, Monterey, CA

Paper No. IMECE2013-63700, pp. V06BT07A080; 6 pages
doi:10.1115/IMECE2013-63700
From:
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 6B: Energy
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5629-1

abstract

In a previous paper (IMECE2011-62311) Platzer et al proposed the use of sailing ships equipped with hydropower turbines to generate the electricity required for the production of hydrogen and oxygen by means of electrolysis which then is brought back to land for re-conversion into electric power. A crucial aspect of the practicality of this “energy ship” concept is the drag of the hydro-turbines. Since little information exists about the drag of towed hydropower generators in this paper the drag of a small hydropower turbine was investigated in a towing tank. Drag measurements are presented for a speed range between 0.6 and 1.8 m/s. Comparisons with available data and the predictions by a computational fluid dynamics analysis show good agreement.

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