International Journal of Fluid Machinery and Systems

Korean Society for Fluid machinery (한국유체기계학회)
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Wells Turbine for Wave Energy Conversion -Effect of Trailing Edge Shape-

  • Takasaki, Katsuya (Graduate School of Science and Engineering, Saga University) ;
  • Tsunematsu, Tomohiro (Advanced Engineering Faculty, National Institute of Technology, Matsue College) ;
  • Takao, Manabu (Department of Mechanical Engineering, National Institute of Technology, Matsue College) ;
  • Alam, M M Ashraful (Department of Mechanical Engineering, National Institute of Technology, Matsue College) ;
  • Setoguchi, Toshiaki (Institute of Ocean Energy, Saga University)
  • Received : 2015.10.29
  • Accepted : 2015.11.08
  • Published : 2016.12.31
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Abstract

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.

Keywords

Acknowledgement

Supported by : Saga University

References

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