Wells Turbine for Wave Energy Conversion : Effect of Trailing Edge Shape

The present study reported of the use of special shaped blade to reduce the difference in pressure across the Wells turbine for wave energy conversion. The blade profile was composed of NACA0020 airfoils and trailing edge was notched like chevron. Experiments were performed investigating the influen...

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Bibliographic Details
Published in:International journal of fluid machinery and systems 2016, 9(4), 33, pp.307-312
Main Authors: Takasaki, Katsuya, Tsunematsu, Tomohiro, Takao, Manabu, Alam, M M Ashraful, Setoguchi, Toshiaki
Format: Article
Language:English
Subjects:
Blades
Blades (cutting)
Conversion
Trailing edges
Turbines
Wave power
Wells turbines
기계공학
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Summary:The present study reported of the use of special shaped blade to reduce the difference in pressure across the Wells turbine for wave energy conversion. The blade profile was composed of NACA0020 airfoils and trailing edge was notched like chevron. Experiments were performed investigating the influence of trailing edge shape on the turbine performance. Four notch depths were used to investigate the effect of depth of cut on the turbine performance. As results, by placing a notch-cut at the trailing edge of the blade, it was possible to reduce the pressure difference across the turbine without lowering the efficiency. In addition, the pressure difference substantially reduced at a constant rate with the increase of the cut ratio.
ISSN:1882-9554
1882-9554
DOI:10.5293/IJFMS.2016.9.4.307