ORCID
- Michele, Simone: 0000-0002-4082-6929
- Greaves, Deborah: 0000-0003-3906-9630
Abstract
In this paper, a concept of a floating elastic wave energy converter consisting of a disk-shaped elastic plate is proposed. The floating plate is moored to the seabed through a series of power take-off (PTO) units. A theoretical model based on the linear potential flow theory and eigenfunction matching method is developed to study the hydroelastic characteristics and evaluate wave power absorption of the device. The PTO system is simulated as a discrete PTO, and moreover, it is also modelled as a continuum PTO to represent the case when the PTO system is composed of a large number of PTO units. The continuum PTO approximation is tested against the discrete PTO simulation for accuracy. Two methods are proposed to predict the wave power absorption of the device. After running convergence analysis and model validation, the present model is employed to do a multiparameter impact analysis. The device adopting a continuum PTO system is found to capture wave power efficiently in an extensive range of wave frequencies. For the continuum PTO system, it is theoretically possible to adopt optimised PTO damper and stiffness/mass to guarantee the absorption of 100 % of the energy flux available in one circular component of the plane incident wave.
DOI
10.1017/jfm.2022.701
Publication Date
2022-08-09
Publication Title
Journal of Fluid Mechanics
ISSN
0022-1120
Embargo Period
2022-09-24
Organisational Unit
School of Engineering, Computing and Mathematics
Recommended Citation
Zheng, S., Michele, S., Liang, H., Meylan, M., & Greaves, D. (2022) 'Wave power extraction from a floating elastic disk-shaped wave energy converter', Journal of Fluid Mechanics, . Available at: https://doi.org/10.1017/jfm.2022.701
