International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
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Modified thrust empirical formula of a flapping foil by including the effects of azimuth angles

  • Kumar, Rupesh (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Shin, Hyunkyoung (School of Naval Architecture and Ocean Engineering, University of Ulsan)
  • Received : 2020.10.05
  • Accepted : 2021.02.03
  • Published : 2021.11.30
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Abstract

Wave energy is one of the most available sources of renewable energy in the world. It has been previously proven that the flapping foil can generate thrust forces using energy from the surface waves and an empirical formula was proposed to predict the thrust forces generated by a flapping foil consist of NACA0015 section (Kumar and Shin, 2019a). However, the proposed empirical formula was restricted to the head waves i.e. 0° azimuth angle which was not useful for the flapping foils encountering with oblique and following waves. Therefore, in this study, the thrust empirical formula was modified to include the effects of azimuth angles based on the experimentally obtained data. And the modified empirical equations were validated by the combination of foils experimentally.

Keywords

Acknowledgement

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP), the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20203040020070), and the Korea Electric Power Corporation (No. R18XA03)

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