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Mathematical modeling of breakwater-integrated oscillating water column wave energy converter devices under irregular incident waves

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  • Trivedi, Kshma
  • Koley, Santanu

Abstract

In the present study, the performance of breakwater-integrated OWC (oscillating water column) wave energy converter devices is analyzed under the action of unidirectional regular and irregular incident waves. Two different types of OWC devices: (i) LIMPET device (sloping-face OWC device) and (ii) quarter-circle-shaped front wall OWC device are considered for the present study. Detailed derivations of the parameters associated with the performance of the OWC devices under the action of irregular waves are provided. To analyze the efficiency of the OWC devices in real sea conditions, the Bretschneider Spectrum is taken as the incident wave spectrum along with nine sea states represent the local wave climate at the OWC plant site Pico, Portugal. The annual-averaged plant efficiencies of the two aforementioned OWC devices are analyzed as a function of chamber length, submergence depth, turbine rotor diameter, and rotational speed of the Wells turbine. It is observed that the annual-averaged plant efficiency can be enhanced significantly with appropriate combinations of chamber length, submergence depth, and turbine characteristics.

Suggested Citation

  • Trivedi, Kshma & Koley, Santanu, 2021. "Mathematical modeling of breakwater-integrated oscillating water column wave energy converter devices under irregular incident waves," Renewable Energy, Elsevier, vol. 178(C), pages 403-419.
    • Handle: RePEc:eee:renene:v:178:y:2021:i:c:p:403-419
    DOI: 10.1016/j.renene.2021.06.075
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    References listed on IDEAS

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    1. Trivedi, Kshma & Koley, Santanu, 2023. "Mathematical modeling of oscillating water column wave energy converter devices placed over an undulated seabed in a two-layer fluid system," Renewable Energy, Elsevier, vol. 216(C).
    2. Mandev, Murat Barış & Altunkaynak, Abdüsselam, 2022. "Advanced efficiency improvement of a sloping wall oscillating water column via a novel streamlined chamber design," Energy, Elsevier, vol. 259(C).
    3. Qu, Ming & Yu, Dingyong & Xu, Zhigang & Gao, Zhiyang, 2022. "The effect of the elliptical front wall on energy conversion performance of the offshore OWC chamber: A numerical study," Energy, Elsevier, vol. 255(C).
    4. Qu, Ming & Yu, Dingyong & Li, Yufeng & Gao, Zhiyang, 2024. "Design and hydrodynamic study of a new pile-based breakwater-OWC device combined system," Energy, Elsevier, vol. 299(C).
    5. Trivedi, Kshma & Koley, Santanu, 2023. "Performance of a hybrid wave energy converter device consisting of a piezoelectric plate and oscillating water column device placed over an undulated seabed," Applied Energy, Elsevier, vol. 333(C).
    6. Medina Rodríguez, Ayrton Alfonso & Trivedi, Kshma & Koley, Santanu & Oderiz Martinez, Itxaso & Mendoza, Edgar & Posada Vanegas, Gregorio & Silva, Rodolfo, 2023. "Improved hydrodynamic performance of an OWC device based on a Helmholtz resonator," Energy, Elsevier, vol. 273(C).

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