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Hydrodynamic performance of an oscillating water column wave energy converter by means of particle imaging velocimetry

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  • López, I.
  • Castro, A.
  • Iglesias, G.

Abstract

In an OWC (oscillating water column) wave energy converter the damping exerted by the turbine on the movements of the water column is one of the main factors, if not the main, affecting the power output. In this work the effects of the turbine-induced damping and the variation in the tidal level on the efficiency of the converter are investigated by means of a novel approach. PIV (particle imaging velocimetry) is used to determine the characteristics of the flow (the velocity and vorticity fields, and the kinetic energy) through a phase-averaging procedure. Then, Reynolds decomposition is applied to separate the velocity fluctuations for each test in order to estimate the turbulent kinetic energy. On this basis, we establish the relevance of the different factors—damping, tidal level and wave conditions—to the hydrodynamic performance of the OWC. We find that the turbine-induced damping is the factor that plays the main role: it affects the hydrodynamic behaviour of the chamber and thereby determines the amount of energy that the OWC is able to capture. In addition, the lip is found to be the critical element of the OWC chamber from the point of view of the structural design.

Suggested Citation

  • López, I. & Castro, A. & Iglesias, G., 2015. "Hydrodynamic performance of an oscillating water column wave energy converter by means of particle imaging velocimetry," Energy, Elsevier, vol. 83(C), pages 89-103.
    • Handle: RePEc:eee:energy:v:83:y:2015:i:c:p:89-103
    DOI: 10.1016/j.energy.2015.01.119
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    2. López, I. & Pereiras, B. & Castro, F. & Iglesias, G., 2014. "Optimisation of turbine-induced damping for an OWC wave energy converter using a RANS–VOF numerical model," Applied Energy, Elsevier, vol. 127(C), pages 105-114.
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    1. 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.
    2. López-Ruiz, Alejandro & Bergillos, Rafael J. & Ortega-Sánchez, Miguel, 2016. "The importance of wave climate forecasting on the decision-making process for nearshore wave energy exploitation," Applied Energy, Elsevier, vol. 182(C), pages 191-203.
    3. Huang, Shijie & Huang, Zhenhua, 2022. "Hydrodynamic performance of a row of closely-spaced bottom-sitting oscillating water columns," Renewable Energy, Elsevier, vol. 195(C), pages 344-356.
    4. Mandev, Murat Barıs & Altunkaynak, Abdüsselam, 2023. "Cylindrical frontwall entrance geometry optimization of an oscillating water column for utmost hydrodynamic performance," Energy, Elsevier, vol. 280(C).
    5. Chen, Jing & Wen, Hongjie & Wang, Yongxue & Ren, Bing, 2020. "Experimental investigation of an annular sector OWC device incorporated into a dual cylindrical caisson breakwater," Energy, Elsevier, vol. 211(C).
    6. Kharkeshi, Behrad Alizadeh & Shafaghat, Rouzbeh & Jahanian, Omid & Alamian, Rezvan & Rezanejad, Kourosh, 2022. "Experimental study of an oscillating water column converter to optimize nonlinear PTO using genetic algorithm," Energy, Elsevier, vol. 260(C).
    7. Elhanafi, Ahmed & Macfarlane, Gregor & Fleming, Alan & Leong, Zhi, 2017. "Experimental and numerical investigations on the hydrodynamic performance of a floating–moored oscillating water column wave energy converter," Applied Energy, Elsevier, vol. 205(C), pages 369-390.
    8. Mia, Mohammad Rashed & Zhao, Ming & Wu, Helen & Munir, Adnan, 2021. "Numerical investigation of scaling effect in two-dimensional oscillating water column wave energy devices for harvesting wave energy," Renewable Energy, Elsevier, vol. 178(C), pages 1381-1397.
    9. Çelik, Anıl & Altunkaynak, Abdüsselam, 2020. "Determination of damping coefficient experimentally and mathematical vibration modelling of OWC surface fluctuations," Renewable Energy, Elsevier, vol. 147(P1), pages 1909-1920.
    10. Elhanafi, Ahmed & Macfarlane, Gregor & Fleming, Alan & Leong, Zhi, 2017. "Scaling and air compressibility effects on a three-dimensional offshore stationary OWC wave energy converter," Applied Energy, Elsevier, vol. 189(C), pages 1-20.
    11. 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.
    12. Fang He & Mingjia Li & Zhenhua Huang, 2016. "An Experimental Study of Pile-Supported OWC-Type Breakwaters: Energy Extraction and Vortex-Induced Energy Loss," Energies, MDPI, vol. 9(7), pages 1-15, July.
    13. Yang, Can & Xu, Tingting & Wan, Chang & Liu, Hengxu & Su, Zuohang & Zhao, Lujun & Chen, Hailong & Johanning, Lars, 2023. "Numerical investigation of a dual cylindrical OWC hybrid system incorporated into a fixed caisson breakwater," Energy, Elsevier, vol. 263(PE).
    14. Henriques, J.C.C. & Gato, L.M.C. & Lemos, J.M. & Gomes, R.P.F. & Falcão, A.F.O., 2016. "Peak-power control of a grid-integrated oscillating water column wave energy converter," Energy, Elsevier, vol. 109(C), pages 378-390.
    15. Elhanafi, Ahmed & Fleming, Alan & Macfarlane, Gregor & Leong, Zhi, 2016. "Numerical energy balance analysis for an onshore oscillating water column–wave energy converter," Energy, Elsevier, vol. 116(P1), pages 539-557.
    16. Liu, Zhen & Xu, Chuanli & Qu, Na & Cui, Ying & Kim, Kilwon, 2020. "Overall performance evaluation of a model-scale OWC wave energy converter," Renewable Energy, Elsevier, vol. 149(C), pages 1325-1338.
    17. 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.
    18. 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).
    19. Medina-López, E. & Moñino Ferrando, A. & Clavero Gilabert, M. & del Pino, C. & Losada Rodríguez, M., 2016. "Note on a real gas model for OWC performance," Renewable Energy, Elsevier, vol. 85(C), pages 588-597.
    20. 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.
    21. Jalón, María L. & Baquerizo, Asunción & Losada, Miguel A., 2016. "Optimization at different time scales for the design and management of an oscillating water column system," Energy, Elsevier, vol. 95(C), pages 110-123.
    22. Çelik, Anıl & Altunkaynak, Abdüsselam, 2019. "Experimental investigations on the performance of a fixed-oscillating water column type wave energy converter," Energy, Elsevier, vol. 188(C).
    23. Carlos Perez-Collazo & Deborah Greaves & Gregorio Iglesias, 2018. "A Novel Hybrid Wind-Wave Energy Converter for Jacket-Frame Substructures," Energies, MDPI, vol. 11(3), pages 1-20, March.
    24. Ning, De-Zhi & Wang, Rong-Quan & Gou, Ying & Zhao, Ming & Teng, Bin, 2016. "Numerical and experimental investigation of wave dynamics on a land-fixed OWC device," Energy, Elsevier, vol. 115(P1), pages 326-337.

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