International Journal of Fluid Machinery and Systems

Korean Society for Fluid machinery (한국유체기계학회)
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A Twin Impulse Turbine for Wave Energy Conversion -The Performance under Unsteady Airflow-

  • Alam, M M Ashraful (Department of Mechanical Engineering, National Institute of Technology, Matsue College) ;
  • Sato, Hideki (Advanced Engineering Faculty, National Institute of Technology, Matsue College) ;
  • Takao, Manabu (Department of Mechanical Engineering, National Institute of Technology, Matsue College) ;
  • Okuhara, Shinya (Support Center for Practical Education, National Institute of Technology, Matsue College) ;
  • Setoguchi, Toshiaki (Institute of Ocean Energy, Saga University)
  • Received : 2015.10.29
  • Accepted : 2015.12.19
  • Published : 2016.12.31
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Abstract

A twin unidirectional impulse turbine for wave energy conversion has been suggested in our previous study, and the performance under unsteady flow has been investigated by quasi-steady analysis. In the present study, the performance of twin impulse turbine under unsteady flow condition has been investigated by unsteady analysis of Computational fluid dynamics. As a result, the mean efficiency of twin unidirectional impulse turbine under unsteady flow is lower than the maximum efficiency of unidirectional impulse turbine. Moreover, it is verified that airflow goes backward in the reverse turbine in low flow rates.

Keywords

Acknowledgement

Supported by : Japan Society for the Promotion of Science (JSPS)

References

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