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REGARDING FLAWS IN A. THAKKER AND M. A. ELHEMRY (2007) 3-D CFD ANALYSIS ON EFFECT OF HUB-TO-TIP RATIO ON PERFORMANCE OF IMPULSE TURBINE FOR WAVE ENERGY CONVERSION

ABSTRACT
Two major flaws present themselves in the paper Thakker, A. and Elhemry, M. A. (2007). 3-D CFD Analysis on Effect of Hub-to-Tip Ratio on Performance of Impulse Turbine for Wave Energy Conversion, THERMAL SCIENCE: Vol. 11 (2007), No. 4, pp. 157-170. The first is the form of the non-dimensional performance parameters. These are at odds with the accepted performance parameters for turbomachinery published in textbooks, Massey, 1971 and the literature, Curran et al., 1998, Thakker et al., 2001. Also the presence of multiple geometric parameters in the definition of the non-dimensional performance parameters invalidates the assumption of geometric similarity and also renders the comparison of geometrically dissimilar turbines impossible.
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THERMAL SCIENCE YEAR 2010, VOLUME 14, ISSUE 1, PAGES [290 - 293]
REFERENCES
  1. Thakker, A., Elhemry, M. A., 3-D CFD Analysis on Effect of Hub-to-Tip Ratio on Performance of Impulse Turbine for Wave Energy Conversion, Thermal Science, 11 (2007), 4, pp. 157-170
  2. Thakker, A., Frawley, P. Sheik Bajeet, E., CA9: Analysis of a Stall Resistant Aerofoil in View of Wave Power Conversion, Proceedings, 11th International Offshore and Polar Engineering Conference, Stavanger, Norway, 2001, Vol. 1, pp. 614-619
  3. Curran, R., Whittaker, T. J. T., Stewart, T. P., Aerodynamic Conversion of Ocean Power from Wave to Wire, Energy Conversion and Management, 39 (1998), 16-18, pp. 1919-1929
  4. Massey, B. S., Units, Dimensional Analysis and Physical Similarity, Van Nostrand-Reinhold, London, 1971

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