Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Two-Dimensional CFD Analysis of the H-Darrieus Wind Turbine Using Openfoam
Submission Author:
Arthur Guilherme , PB
Co-Authors:
Arthur Guilherme, Gilberto Augusto Amado Moreira, Joao Alves de Lima
Presenter: Arthur Guilherme
doi://10.26678/ABCM.COBEM2021.COB2021-2041
Abstract
The pressure to implement clean and renewable energy in the energy matrix due to the global warming threat, the improved energy security promoted by decentralized generation and the desire of smart cities intensified research in wind energy solutions for urban environments in the last few decades. In this context, the Vertical Axis Wind Turbines (VAWT) have advantages over horizontal axis turbines because they do not need alignment with the wind direction and because they have heavy machinery attached to the ground. In order to contribute to this research area, this work aims to apply and evaluate a two-dimensional Computational Fluid Dynamics approach to the transient simulation of a wind turbine type H-Darrieus. The URANS approach with the SST k-omega turbulence model for the closure problem in a hybrid mesh with a rotating part was used in this work with the OpenFOAM library. The power coefficient in function of the blade tip speed ratio \lambda and the wake characteristics numerically obtained were compared to experimental data available in the literature. The numerical results showed, despite the simplification of the two-dimensional model, good agreement with the experimental results with regard to the shape of the power coefficient curve and the characteristics of the wake, reinforcing the efficiency of the computational modeling performed with OpenFOAM.
Keywords
H Darrieus, CFD, OpenFOAM, wind energy, VAWT, URANS
