Document Type

Article

Publication Date

9-22-2025

Department

Department of Mechanical and Aerospace Engineering

Abstract

We theoretically examine the performance of a two-body wave energy converter (WEC) featuring a floating sphere and a submerged annular heave plate, connected by a power take-off (PTO) system. Utilising linear wave theory, we derive the system's frequency-domain response to regular plane waves and analyse the impact of varying disk porosity on power generation. Our results suggest that annular disks can enhance power extraction efficiency in various cases compared with solid heave plates. Additionally, permeable plates can broaden operational conditions by reducing oscillation amplitudes and decreasing the mechanical strain on the PTO system without substantially compromising the power conversion efficiency. Overall, our findings provide valuable insights for optimising WEC designs to improve energy capture, emphasising the potential hydrodynamic advantages of using porous reaction bodies.

Publisher's Statement

©The Author(s), 2025. Published by Cambridge University Press. Publisher’s version of record: https://doi.org/10.1017/flo.2025.10024

Publication Title

Flow

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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