Hydrodynamic modelling and optimisation of flexible oscillating wave surge converters, comparison with rigid-motion devices.

ORAL

Abstract

Oscillating wave surge converters (OWSCs) are wave energy devices which predominantly exploit the horizontal wave-induced fluid motion. This work explores the hydrodynamic modelling and optimisation of flexible OWSCs, similar to seaweed or kelp, arranged in periodic rows. The hydroelastic problem is solved numerically, based on an eigenfunction expansion method, hence generalising previous works on rigid devices. The relative merits of OWSCs with flexible vs rigid modes of deformation are assessed. Optimisation of the deformation mode shape to reduce drag-induced losses is discussed.

*This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 842967.

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Publication: Mérigaud, A., Thiria, B., & Godoy-Diana, R. (2021). A wide-spacing approximation model for the reflection and transmission of water waves over an array of vertical obstacles. Journal of Fluid Mechanics, 923, A2. doi:10.1017/jfm.2021.532
Mérigaud, A., Thiria, B., & Godoy-Diana, R. (2021). Transmission, reflection and absorption of wave energy by an array of flexible oscillating wave surge converters: a numerical study. To be presented and published in the proceedings of the 14the European Wave and Tidal Wave Energy Conference (EWTEC 2021), 5-9 September 2021, Plymouth, UK

Presenters

  • Alexis Merigaud

    • ESPCI Paris

Authors

  • Alexis Merigaud

    • ESPCI Paris

  • Benjamin Thiria

    • ESPCI Paris
    • PMMH, ESPCI Paris–PSL, CNRS, Sorbonne Université, Université de Paris

  • Ramiro Godoy-Diana

    • CNRS
    • PMMH, ESPCI Paris–PSL, CNRS, Sorbonne Université, Université de Paris
    • PMMH, CNRS, ESPCI Paris–PSL, Sorbonne U, U Paris