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The inclusion of non-linearities in a mathematical model for U-Oscillating Water Column wave energy converters

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  • Scandura, Pietro
  • Malara, Giovanni
  • Arena, Felice

Abstract

A mathematical model for U-Oscillating Water Column (U-OWC) wave energy converters is developed and tested. The model is based on the linear irrotational wave theory but is able to treat different nonlinearities related to the physical processes involved in the U-OWC dynamics. These nonlinearities include those due to not small oscillations of the free surface in the air chamber and to the air transformation, as well as those related to the characteristics of the air turbine. An approach to include into the model the flow resistances encountered by the flow within the U-OWC is also presented.

Suggested Citation

  • Scandura, Pietro & Malara, Giovanni & Arena, Felice, 2021. "The inclusion of non-linearities in a mathematical model for U-Oscillating Water Column wave energy converters," Energy, Elsevier, vol. 218(C).
    • Handle: RePEc:eee:energy:v:218:y:2021:i:c:s0360544220324270
    DOI: 10.1016/j.energy.2020.119320
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    References listed on IDEAS

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    1. Falcão, António F.O. & Henriques, João C.C., 2016. "Oscillating-water-column wave energy converters and air turbines: A review," Renewable Energy, Elsevier, vol. 85(C), pages 1391-1424.
    2. Malara, Giovanni & Arena, Felice, 2019. "Response of U-Oscillating Water Column arrays: semi-analytical approach and numerical results," Renewable Energy, Elsevier, vol. 138(C), pages 1152-1165.
    3. Malara, Giovanni & Arena, Felice, 2013. "Analytical modelling of an U-Oscillating Water Column and performance in random waves," Renewable Energy, Elsevier, vol. 60(C), pages 116-126.
    4. Vyzikas, Thomas & Deshoulières, Samy & Barton, Matthew & Giroux, Olivier & Greaves, Deborah & Simmonds, Dave, 2017. "Experimental investigation of different geometries of fixed oscillating water column devices," Renewable Energy, Elsevier, vol. 104(C), pages 248-258.
    5. Malara, Giovanni & Romolo, Alessandra & Fiamma, Vincenzo & Arena, Felice, 2017. "On the modelling of water column oscillations in U-OWC energy harvesters," Renewable Energy, Elsevier, vol. 101(C), pages 964-972.
    6. Luo, Yongyao & Nader, Jean-Roch & Cooper, Paul & Zhu, Song-Ping, 2014. "Nonlinear 2D analysis of the efficiency of fixed Oscillating Water Column wave energy converters," Renewable Energy, Elsevier, vol. 64(C), pages 255-265.
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    Cited by:

    1. Wu, Ru-kang & Chen, Yi & Xue, Mu-wen & Wu, Bi-jun & Li, Meng & Zhang, Fu-ming & Zhang, Yun-qiu, 2023. "Influence of circuit on power generation performance of wave energy power generation device using oscillating water column technology," Renewable Energy, Elsevier, vol. 219(P1).
    2. Zhu, Guixun & Samuel, John & Zheng, Siming & Hughes, Jason & Simmonds, David & Greaves, Deborah, 2023. "Numerical investigation on the hydrodynamic performance of a 2D U-shaped Oscillating Water Column wave energy converter," Energy, Elsevier, vol. 274(C).
    3. Samak, Mahmoud M. & Elgamal, Hassan & Nagib Elmekawy, Ahmed M., 2021. "The contribution of L-shaped front wall in the improvement of the oscillating water column wave energy converter performance," Energy, Elsevier, vol. 226(C).
    4. Carlo, Lilia & Iuppa, Claudio & Faraci, Carla, 2023. "A numerical-experimental study on the hydrodynamic performance of a U-OWC wave energy converter," Renewable Energy, Elsevier, vol. 203(C), pages 89-101.

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