Shagun Agarwal, Chen Liang, Andrei Faragau, Oriol Colomés ([email protected]) LinkedIn
This paper presents a floating membrane equipped with local resonators as a dual-function system for wave energy harvesting and wave attenuation. Unlike conventional floating breakwaters or standalone wave energy converters, the proposed concept overcomes the limited low-frequency interaction of flexible membranes, where ocean-wave energy is most abundant, by integrating local resonators. A coupled membrane–fluid–resonator model is developed to study the effect of the resonators on the wet natural frequencies, modal interaction, and wave reflection/transmission. The results show that properly tuned resonators can increase energy absorption at low frequencies while simultaneously reducing transmitted wave amplitude. The proposed system demonstrates how locally resonant concepts can be translated to hydroelastic structures to combine coastal protection and renewable energy harvesting within a single platform.
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To study locally-resonant hydroelastic structures we used **HydroElasticFEM.jl** a Julia package for finite element (FE) simulation of hydro-elastic wave–structure interaction problems. It couples potential flow fluid models with structural models (membranes, Euler–Bernoulli beams, resonators) using the Gridap.jl FE framework.
https://github.com/CMOE-TUDelft/HydroElasticFEM.jl
Feel free to check it out and get in contact if you think might be relevant for your application of interest! (still under development, but looking for early adopters)
