Numerical Analysis to Compare the Performance of an Oscillating Water Column Device with Different Air Chamber Geometry

Abstract

The pursuit of sustainable and renewable energy sources has led to a profound interest in harnessing the vast potential of ocean waves. Among the various methods of harnessing wave energy, the oscillating water column (OWC) device has emerged as a promising wave energy converter (WEC). This study introduces an innovative OWC with a circle in square (CIS) model specifically designed to improve its adaptability to ocean wave conditions featuring low-amplitude, short-to-intermediate wave periods. The research also includes a comparative analysis with a square in square (SIS) model to assess the performance of the CIS model under these specific conditions. By varying the geometric configurations and wave conditions, the research uncovers key factors influencing OWC device performance. Ansys Fluent (version 2023 R1) software is employed for advanced computational simulations in a numerical wave tank. The study reveals that the CIS model consistently outperforms the SIS model under different orifice opening ratios (A). This investigation yields critical insights into enhancing the design of OWC-WEC devices for efficient energy conversion, with a specific focus on exploring the intricacies of complex geometries, illuminating the interplay between orifice opening ratios and wave conditions. These findings guide the development of OWC technology to meet the world's growing energy demands.