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This chapter compares and analyzes the hydrodynamic performance of a conventional oscillating water column (OWC) device. A two-dimensional numerical wave tank with a nonlinear Reynolds-averaged Navier-Stokes equations (RANS) model and standard \(k-\omega \) turbulence model is used along with the Pierson-Moskowitz (P-M) incident waves spectrum. The free surface elevation inside the chambers of the specified OWC device is shown by the numerical simulation during the course of a full-pressure fluctuation cycle. Additionally, a study is conducted to examine the effects of airflow rate and pressure drop through the orifice of the OWC chamber. The pressure drop indicates the device placed over a uniform bottom shows a slightly better performance than when placed over the undulated seabeds.

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Comparative Study on the Performance of an Oscillating Water Column Device Placed on Uniform and Undulated Seabed

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  • 发表日期：

    2026年

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  • Parothidil Anjusree Krishnan,
  • Santanu Koley,
  • Shrabani Mondal

摘要

This chapter compares and analyzes the hydrodynamic performance of a conventional oscillating water column (OWC) device. A two-dimensional numerical wave tank with a nonlinear Reynolds-averaged Navier-Stokes equations (RANS) model and standard \(k-\omega \) turbulence model is used along with the Pierson-Moskowitz (P-M) incident waves spectrum. The free surface elevation inside the chambers of the specified OWC device is shown by the numerical simulation during the course of a full-pressure fluctuation cycle. Additionally, a study is conducted to examine the effects of airflow rate and pressure drop through the orifice of the OWC chamber. The pressure drop indicates the device placed over a uniform bottom shows a slightly better performance than when placed over the undulated seabeds.