Mathematical and Numerical Modelling of Wave Impact on Wave-Energy Buoys

Kalogirou, Anna; Bokhove, Onno

Abstract

We report on the mathematical and numerical modelling of amplified rogue waves driving a wave-energy device in a contraction. This wave-energy device consists of a floating buoy attached to an AC-induction motor and constrained to move upward only in a contraction, for which we have realised a working scale-model. A coupled Hamiltonian system is derived for the dynamics of water waves and moving wave-energy buoys. This nonlinear model consists of the classical water wave equations for the free surface deviation and velocity potential, coupled to a set of equations describing the dynamics of a wave-energy buoy. As a stepping stone, the model is solved numerically for the case of linear shallow water waves causing the motion of a simple buoy structure with V-shaped cross-sections, using a variational (dis)continuous Galerkin finite element method.

Citation

Kalogirou, A., & Bokhove, O. (2016, June). Mathematical and Numerical Modelling of Wave Impact on Wave-Energy Buoys. Presented at ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering, Busan, South Korea

• Presentation Conference Type: Edited Proceedings
• Conference Name: ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
• Start Date: Jun 19, 2016
• End Date: Jun 24, 2016
• Acceptance Date: Feb 23, 2016
• Publication Date: Jun 19, 2016
• Deposit Date: Jun 4, 2019
• ISBN: 9780791849989
• DOI: https://doi.org/10.1115/omae2016-54937
• Public URL: https://nottingham-repository.worktribe.com/output/2138171