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Large-scale experiments on the behaviour of a generalised Oscillating Water Column under random waves

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  • Viviano, Antonino
  • Naty, Stefania
  • Foti, Enrico
  • Bruce, Tom
  • Allsop, William
  • Vicinanza, Diego

Abstract

This work investigates wave reflection and loading on a generalised Oscillating Water Column (OWC) wave energy converter by means of large scale (approximately 1:5–1:9) experiments in the Grosse Wellenkanal (GWK), in which variation of both still water depth and orifice (PTO) dimension are investigated under random waves. The model set-up, calibration methodology, reflection analyses and loadings acting on the OWC are reported. On the basis of wave reflection analysis, the optimum orifice is defined as that restriction which causes the smallest reflection coefficient and thus the greatest wave energy extraction. Pressures on the front wall, rear wall and chamber ceiling are measured. Maximum pressures on the vertical walls, and resulting integrated forces, are compared with available formulations for impulsive loading prediction, which showed significant underestimation for heaviest loading conditions.

Suggested Citation

  • Viviano, Antonino & Naty, Stefania & Foti, Enrico & Bruce, Tom & Allsop, William & Vicinanza, Diego, 2016. "Large-scale experiments on the behaviour of a generalised Oscillating Water Column under random waves," Renewable Energy, Elsevier, vol. 99(C), pages 875-887.
    • Handle: RePEc:eee:renene:v:99:y:2016:i:c:p:875-887
    DOI: 10.1016/j.renene.2016.07.067
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    References listed on IDEAS

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