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The Oscillating Water Column (OWC) device is a widely researched wave energy converter (WEC) that provides a renewable energy source with the potential to meet world energy demands. This study will involve altering the orifice ratio and relative opening and conducting numerical simulations to assess their effects. The numerical simulation is carried out in a 3-D numerical wave tank (NWT) using ANSYS FLUENT software CFD code to discretize the 2nd order Stokes wave equation, and the discretization is carried out with the help of the finite volume method (FVM). Numerical results are compared with previously published experimental data to ensure the model is accurate. Hydrodynamic efficiency rises between τ = 0.4–0.8% and declines between τ = 0.8–1.3% for all relative openness (α). Optimal efficiency of 73.30% is achieved with α = 75% and wave steepness = 0.02. The 30° leap wall OWC device or triangular shape leap wall OWC device has superior hydrodynamic efficiency than the rectangular base OWC device.

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Effect of Leap Wall on the Hydrodynamic Performance of Oscillating Water Column (OWC) Devices

  • 会议论文

  • 发表日期：

    2025年

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  • Ravi Ranjan Manjul,
  • Pradip Deb Roy

摘要

The Oscillating Water Column (OWC) device is a widely researched wave energy converter (WEC) that provides a renewable energy source with the potential to meet world energy demands. This study will involve altering the orifice ratio and relative opening and conducting numerical simulations to assess their effects. The numerical simulation is carried out in a 3-D numerical wave tank (NWT) using ANSYS FLUENT software CFD code to discretize the 2nd order Stokes wave equation, and the discretization is carried out with the help of the finite volume method (FVM). Numerical results are compared with previously published experimental data to ensure the model is accurate. Hydrodynamic efficiency rises between τ = 0.4–0.8% and declines between τ = 0.8–1.3% for all relative openness (α). Optimal efficiency of 73.30% is achieved with α = 75% and wave steepness = 0.02. The 30° leap wall OWC device or triangular shape leap wall OWC device has superior hydrodynamic efficiency than the rectangular base OWC device.