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Wave Energy Extraction by Flexible Floaters

Author

Listed:
  • Simone Michele

    (Department of Mathematical Sciences, Loughborough University, Loughborough LE11 3TU, UK
    School of Engineering, Computing and Mathematics, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK)

  • Federica Buriani

    (Department of Mathematical Sciences, Loughborough University, Loughborough LE11 3TU, UK
    School of Engineering, Computing and Mathematics, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK)

  • Emiliano Renzi

    (Department of Mathematical Sciences, Loughborough University, Loughborough LE11 3TU, UK)

  • Marijn van Rooij

    (Ocean Grazer, Zernikepark 12, 9747 AN Groningen, The Netherlands)

  • Bayu Jayawardhana

    (Discrete Technology and Production Automation, Engineering and Technology Institute Groningen, Faculty of Science & Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands)

  • Antonis I. Vakis

    (Computational Mechanical and Materials Engineering, Engineering and Technology Institute Groningen, Faculty of Science & Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands)

Abstract

We present a novel mathematical model to investigate the extraction of wave power by flexible floaters. The model is based on the method of dry modes, coupled with a matched eigenfunction expansion. Our model results compare satisfactorily with preliminary data obtained from a demonstrator device, developed at the University of Groningen. We show that the role of elasticity is to increase the number of resonant frequencies with respect to a rigid body, which has a positive effect on wave power output. The mathematical model is then extended to irregular incident waves, described by a JONSWAP spectrum. Our results show that the peak capture factors decrease in irregular waves, as compared to the monochromatic case. However, the system becomes more efficient at non-resonant frequencies. This work highlights the need to scale-up experimental investigations on flexible wave energy converters, which are still a small minority, compared to those on rigid converters.

Suggested Citation

  • Simone Michele & Federica Buriani & Emiliano Renzi & Marijn van Rooij & Bayu Jayawardhana & Antonis I. Vakis, 2020. "Wave Energy Extraction by Flexible Floaters," Energies, MDPI, vol. 13(23), pages 1-24, November.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:23:p:6167-:d:450202
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    References listed on IDEAS

    as
    1. Wei, Y. & Barradas-Berglind, J.J. & Yu, Z. & van Rooij, M. & Prins, W.A. & Jayawardhana, B. & Vakis, A.I., 2019. "Frequency-domain hydrodynamic modelling of dense and sparse arrays of wave energy converters," Renewable Energy, Elsevier, vol. 135(C), pages 775-788.
    2. Ping Wang & Zunshui Cheng, 2013. "Nonlinear Hydroelastic Waves beneath a Floating Ice Sheet in a Fluid of Finite Depth," Abstract and Applied Analysis, Hindawi, vol. 2013, pages 1-13, October.
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    Cited by:

    1. Emiliano Renzi & Simone Michele & Siming Zheng & Siya Jin & Deborah Greaves, 2021. "Niche Applications and Flexible Devices for Wave Energy Conversion: A Review," Energies, MDPI, vol. 14(20), pages 1-25, October.
    2. Constantine Michailides, 2021. "Ηydrodynamic Response and Produced Power of a Combined Structure Consisting of a Spar and Heaving Type Wave Energy Converters," Energies, MDPI, vol. 14(1), pages 1-22, January.
    3. Zhu, Kai & Shi, Hongda & Zheng, Siming & Michele, Simone & Cao, Feifei, 2023. "Hydrodynamic analysis of hybrid system with wind turbine and wave energy converter," Applied Energy, Elsevier, vol. 350(C).
    4. Zheng, Siming & Phillips, John Wilfrid & Hann, Martyn & Greaves, Deborah, 2023. "Mathematical modelling of a floating Clam-type wave energy converter," Renewable Energy, Elsevier, vol. 210(C), pages 280-294.

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