Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Study for Application of Oscillating Hydrofoil in Offshore Wind Turbines
Submission Author:
Guilherme Amaral do Prado Campos , RJ
Co-Authors:
Guilherme Amaral do Prado Campos, Luciano Santos Constantin Raptopoulos, Max Suell Dutra
Presenter: Guilherme Amaral do Prado Campos
doi://10.26678/ABCM.COBEM2023.COB2023-1139
Abstract
The oceans are inexhaustible sources of energy, as are solar, wind, and biomass. However, it has a high cost-benefit ratio compared to other renewable sources, but this difference has been reducing over time. An indication of this reduction can be seen through investments in offshore wind turbine installations, which have had significant growth in the last five years, mainly in Europe. This growth can bring opportunities for other energy sources, including ocean ones. There are five known ways of obtaining energy through the ocean: waves, tides, ocean currents, and differences in salinity and temperature. A model of energy converter whose efficiency has increased in recent years is the oscillating hydrofoil, which uses ocean currents to move a wing and generate electrical energy. Within this context, this work aims to present a solution for the application of oscillating hydrofoils in the monopile-type foundations of offshore wind turbines. For this, a study was carried out on the geometries of the foundations, the oscillating hydrofoil models, and the influence of the environment, and an analysis of the positioning of the HO was carried out to enable its inclusion in the foundation structure. The literature verified the dimensional variation and the types of loads generated by wind, ocean currents, and waves in foundations of the monopile type. Because of this, a structure for fixing the oscillating hydrofoil with the foundation was proposed, highlighting the main parts to enable the system assembly. Furthermore, simulations were carried out using flow simulation software (CFD) to qualitatively analyze the streamlines and discuss a minimum distance between the hydrofoil and the foundation. Finally, it is possible to state that the application of oscillating hydrofoil in foundations of the monopile type is feasible and should be encouraged to increase the use of the structure of offshore wind turbines.
Keywords
oscillating hydrofoil, flapping foil, offshore wind turbine
