Session: 06-03-02 Fluid-Structure, Multi-body and Wave-body Interaction II

Paper Number: 78810

78810 - Numerical Modeling of Moored Floating Platforms for Wave Energy Converters Using DualSPHysics 

The DualSPHysics open-source code establishes a comprehensive and efficient framework for simulating coastal and ocean engineering structures, which has proven particularly reliable in wave energy converter (WEC) simulation. In this research, the experimental data of the floating oscillating surge wave energy converter (FOSWEC), is used for validation purposes. The FOSWEC device developed by SANDIA National Laboratories (US) is quite complex as it has several floating parts, anchor legs and a power take-off system (PTO) connected to the pitching motion of two flaps. Kinetic energy is converted from the relative rotation between the flaps and a movable frame of the platform; this sets as a significant challenge for the validation of the FOSWEC using a unitary numerical tool. This work proposes a first validation campaign carried out using regular waves, and considering different parameters for the definition of the PTO system. An efficiency analysis is then performed to investigate and optimize the values ​​of the quantities that are implemented in the closed loop control system. Finally, highly energetic sea states are simulated. The FOSWEC is tested under constrained focused waves and the behavior of the control system is investigated regarding how to minimize the forces on the major components of the system.

Presenting Author: Bonaventura Tagliafierro University of Salerno

Authors:

Bonaventura Tagliafierro University of Salerno
Iván Martínez-Estévez University of Vigo
César Crego-Loureiro University of Vigo
José Manuel Domínguez University of Vigo
Alejandro Jacobo Crespo University of Vigo
Ryan Coe Sandia National Laboratories
Giorgio Bacelli Sandia National Laboratories
Moncho Gómez Gesteira University of Vigo
Giacomo Viccione University of Salerno