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Study Effects of the Floater Geometry on the Output Power of Ocean Wave Energy Harvesters

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Abstract

Nowadays, with increasing progress in technology and the growth of the human population, the need for energy is increasing, consequently, researchers pay more attention to renewable energies. One of these sources of energy is ocean wave energy, which has the highest energy density among other renewable energies. However, because of the low frequency of ocean waves, this source of energy gets fewer considerations in the case of vibration-based energy harvesting. In this study, heave motions of an unmoored moving floater are considered for vibration-based energy harvesting. To do so, a two-degree-of-freedom piezoelectric system is considered, and its governing equations are derived. Then, the geometry of the floater, which is used for harvesting energy from the ocean waves is studied. Finally, the effects of changing the geometry of the floater on the amount of harvested energy are studied.

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Data availability

The datasets generated and analyzed during the current study are available from the corresponding author upon reasonable request.

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Funding

This work was supported by Brain Pool Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (No. 2022H1D3A2A01081886). This work was also supported by the National Research Foundation of Korea (NRF) grant, which is funded by the Korean government (MSIT) (No. 2020R1A5A8018822).

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Authors and Affiliations

  1. Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

    Aref Afsharfard & Nahid Bazyar

  2. School of Mechanical Engineering, Eco-Friendly Smart Ship Parts Technology Innovation Center, Pusan National University, Busan, 46241, Republic of Korea

    Aref Afsharfard & Kyung Chun Kim

Authors
  1. Aref Afsharfard
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  2. Nahid Bazyar
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  3. Kyung Chun Kim
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Correspondence to Aref Afsharfard or Kyung Chun Kim.

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The authors declare that they have no conflict of interest. No conflict of interest exists in the submission of this manuscript and the manuscript is approved by all authors for publication. I would like to declare on behalf of my co-authors that the work described was original research that has not been published previously, and not under consideration for publication elsewhere, in whole or in part. All the authors listed have approved the manuscript that is enclosed.

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Afsharfard, A., Bazyar, N. & Kim, K.C. Study Effects of the Floater Geometry on the Output Power of Ocean Wave Energy Harvesters. Int. J. Aeronaut. Space Sci. 24, 1102–1110 (2023). https://doi.org/10.1007/s42405-023-00579-3

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  • DOI: https://doi.org/10.1007/s42405-023-00579-3

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