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Implications of spring-like air compressibility effects in floating coaxial-duct OWCs: Experimental and numerical investigation

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  • Portillo, J.C.C.
  • Gato, L.M.C.
  • Henriques, J.C.C.
  • Falcão, A.F.O.

Abstract

The paper analyses the spring-like air compressibility effect in coaxial-duct oscillating-water-column (CD-OWC) wave energy converters (WECs). This is accomplished through a novel non-linear time-domain model for OWC WECs implemented in the object-oriented language Modelica. Good agreement was observed between numerical and physical model testing results. The air chamber volume significantly affected the spring-like air compressibility effect and the converter performance. Another significant factor is the damping level of the power take-off system. Both fixed and floating CD-OWC versions were numerically investigated, focusing on the compressibility effect. Differences were found mainly due to the additional degrees of freedom in floating configurations. In general, numerical and experimental results showed that air compressibility might positively or negatively affect device power performance in regular waves, depending on whether the frequency is within or out of an interval defined by critical frequencies. Some particular points were observed and categorised as Equicompressum Nullum and Equicompressum critical points, representing different characteristics. Knowledge of these critical values might be important in OWC control. Finally, some applications of the CD-OWC concept are discussed, including considerations on the power output level provided by biradial and Wells air turbines.

Suggested Citation

  • Portillo, J.C.C. & Gato, L.M.C. & Henriques, J.C.C. & Falcão, A.F.O., 2023. "Implications of spring-like air compressibility effects in floating coaxial-duct OWCs: Experimental and numerical investigation," Renewable Energy, Elsevier, vol. 212(C), pages 478-491.
    • Handle: RePEc:eee:renene:v:212:y:2023:i:c:p:478-491
    DOI: 10.1016/j.renene.2023.04.143
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    References listed on IDEAS

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    1. Scialò, A. & Henriques, J.C.C. & Malara, G. & Falcão, A.F.O. & Gato, L.M.C. & Arena, F., 2021. "Power take-off selection for a fixed U-OWC wave power plant in the Mediterranean Sea: The case of Roccella Jonica," Energy, Elsevier, vol. 215(PA).
    2. Gonçalves, Rafael A.A.C. & Teixeira, Paulo R.F. & Didier, Eric & Torres, Fernando R., 2020. "Numerical analysis of the influence of air compressibility effects on an oscillating water column wave energy converter chamber," Renewable Energy, Elsevier, vol. 153(C), pages 1183-1193.
    3. López, I. & Carballo, R. & Taveira-Pinto, F. & Iglesias, G., 2020. "Sensitivity of OWC performance to air compressibility," Renewable Energy, Elsevier, vol. 145(C), pages 1334-1347.
    4. 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.
    5. Carrelhas, A.A.D. & Gato, L.M.C. & Henriques, J.C.C. & Falcão, A.F.O. & Varandas, J., 2019. "Test results of a 30 kW self-rectifying biradial air turbine-generator prototype," Renewable and Sustainable Energy Reviews, Elsevier, vol. 109(C), pages 187-198.
    6. 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.
    7. Alves, João S. & Gato, Luís M.C. & Falcão, António F.O. & Henriques, João C.C., 2021. "Experimental investigation on performance improvement by mid-plane guide-vanes in a biplane-rotor Wells turbine for wave energy conversion," Renewable and Sustainable Energy Reviews, Elsevier, vol. 150(C).
    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. Dai, Saishuai & Day, Sandy & Yuan, Zhiming & Wang, Haibin, 2019. "Investigation on the hydrodynamic scaling effect of an OWC type wave energy device using experiment and CFD simulation," Renewable Energy, Elsevier, vol. 142(C), pages 184-194.
    10. López, Iraide & Andreu, Jon & Ceballos, Salvador & Martínez de Alegría, Iñigo & Kortabarria, Iñigo, 2013. "Review of wave energy technologies and the necessary power-equipment," Renewable and Sustainable Energy Reviews, Elsevier, vol. 27(C), pages 413-434.
    11. Portillo, J.C.C. & Collins, K.M. & Gomes, R.P.F. & Henriques, J.C.C. & Gato, L.M.C. & Howey, B.D. & Hann, M.R. & Greaves, D.M. & Falcão, A.F.O., 2020. "Wave energy converter physical model design and testing: The case of floating oscillating-water-columns," Applied Energy, Elsevier, vol. 278(C).
    12. Henriques, J.C.C. & Portillo, J.C.C. & Sheng, W. & Gato, L.M.C. & Falcão, A.F.O., 2019. "Dynamics and control of air turbines in oscillating-water-column wave energy converters: Analyses and case study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 112(C), pages 571-589.
    13. Henriques, J.C.C. & Portillo, J.C.C. & Gato, L.M.C. & Gomes, R.P.F. & Ferreira, D.N. & Falcão, A.F.O., 2016. "Design of oscillating-water-column wave energy converters with an application to self-powered sensor buoys," Energy, Elsevier, vol. 112(C), pages 852-867.
    14. Simonetti, I. & Cappietti, L. & Elsafti, H. & Oumeraci, H., 2018. "Evaluation of air compressibility effects on the performance of fixed OWC wave energy converters using CFD modelling," Renewable Energy, Elsevier, vol. 119(C), pages 741-753.
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