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Hydrodynamic performance of an oscillating water column with power take-off Interaction: An experimental investigation

Author

Listed:
  • Sashank, R.
  • Rony, J.S.
  • Rambabu, Nimma
  • Srineash, V.K.

Abstract

The efficiency of the Oscillating Water Column (OWC) primarily depends on the vertical movement of the water column, the differential pressure developed inside the OWC chamber, and the air movement through the air duct for energy conversion. This study investigates the efficiency of the OWC with Power Take-Off (PTO) interaction using a physical model test that incorporates PTO dampening employing a Wells turbine inside the air duct. To enhance the vertical movement of the water column within the chamber, a circular bottom profile was provided for the OWC. Additionally, a cylindrical projection was added to the front lip wall to reduce turbulence in the flow. The study investigates performance in terms of hydrodynamic efficiency, pressure ratios, amplification factor, wave power absorption and the pneumatic power developed inside the chamber and at the air duct of the OWC model under regular wave conditions. The study further examined the air flow velocity and the mechanical power through the Wells turbine integrated with OWC to evaluate the efficiency of the OWC with PTO interaction.

Suggested Citation

  • Sashank, R. & Rony, J.S. & Rambabu, Nimma & Srineash, V.K., 2026. "Hydrodynamic performance of an oscillating water column with power take-off Interaction: An experimental investigation," Renewable Energy, Elsevier, vol. 256(PD).
    • Handle: RePEc:eee:renene:v:256:y:2026:i:pd:s0960148125017598
    DOI: 10.1016/j.renene.2025.124095
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    References listed on IDEAS

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