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Investigation on Performance of a Modified Breakwater-Integrated OWC Wave Energy Converter

Author

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  • Ching-Piao Tsai

    (Department of Civil Engineering, National Chung Hsing University, Taichung 402, Taiwan)

  • Chun-Han Ko

    (Department of Civil Engineering, National Chung Hsing University, Taichung 402, Taiwan)

  • Ying-Chi Chen

    (Department of Civil Engineering, National Chung Hsing University, Taichung 402, Taiwan)

Abstract

The hydrodynamic performance of the wave power extraction of an innovative modified breakwater-integrated Oscillating Water Column (OWC) wave energy converter is both numerically and experimentally presented in this study. The modified OWC device comprises a non-conventional perforated wall in front of a typical OWC chamber. The air-water two-fluid model, considering the fluid compressibility involved in FLOW-3D solver, is employed for the numerical simulations of the hydrodynamic characteristics of the OWC devices. The numerical simulations of the hydrodynamic performance of the OWC device are first validated by the experimental measurements with a scaled model. The effects of the geometry of the OWC chamber on the hydrodynamic efficiency are then discussed by numerical simulations using a full-scale OWC device under regular waves. The numerical and experimental results show that the present modified device can form a U-type flow pattern by the oscillating water column, thus developing better performance in extracting pneumatic power, when compared with the typical OWC device which does not have the perforated front wall. The results indicate that the present modified OWC device can not only promote the efficiency of the pneumatic power extraction, but can also reduce the wave force acting on the structure.

Suggested Citation

  • Ching-Piao Tsai & Chun-Han Ko & Ying-Chi Chen, 2018. "Investigation on Performance of a Modified Breakwater-Integrated OWC Wave Energy Converter," Sustainability, MDPI, vol. 10(3), pages 1-20, February.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:3:p:643-:d:133974
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    References listed on IDEAS

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    Cited by:

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    4. Mia, Mohammad Rashed & Zhao, Ming & Wu, Helen & Munir, Adnan, 2022. "Numerical investigation of offshore oscillating water column devices," Renewable Energy, Elsevier, vol. 191(C), pages 380-393.
    5. Yanna Zheng & Jiafan Li & Yingna Mu & Yu Zhang & Siyao Huang & Xiran Shao, 2023. "Numerical Study on Wave Dissipation Performance of OWC-Perforated Floating Breakwater under Irregular Waves," Sustainability, MDPI, vol. 15(14), pages 1-20, July.
    6. 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).
    7. Wang, Rong-quan & Ning, De-zhi, 2020. "Dynamic analysis of wave action on an OWC wave energy converter under the influence of viscosity," Renewable Energy, Elsevier, vol. 150(C), pages 578-588.
    8. Jorge Molines & Arnau Bayon & M. Esther Gómez-Martín & Josep R. Medina, 2019. "Influence of Parapets on Wave Overtopping on Mound Breakwaters with Crown Walls," Sustainability, MDPI, vol. 11(24), pages 1-19, December.
    9. Li Li & Jiadong Zhu & Guanqiong Ye & Xuehao Feng, 2018. "Development of Green Ports with the Consideration of Coastal Wave Energy," Sustainability, MDPI, vol. 10(11), pages 1-17, November.
    10. Fox, Brooklyn N. & Gomes, Rui P.F. & Gato, Luís M.C., 2021. "Analysis of oscillating-water-column wave energy converter configurations for integration into caisson breakwaters," Applied Energy, Elsevier, vol. 295(C).

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