Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
CHARACTERIZATION OF WIND TURBINE AERODYNAMICS PARAMETERS USING LARGE EDDY SIMULATION WITH AN IMMERSED BOUNDARY METHOD
Submission Author:
Leandro Jose Lemes Stival , PR
Co-Authors:
Leandro Jose Lemes Stival, João Marcelo Vedovotto, Fernando Oliveira de Andrade
Presenter: Leandro Jose Lemes Stival
doi://10.26678/ABCM.COBEM2019.COB2019-0554
Abstract
The demand for energy has been increasing in the last decade due to the global economic growth. Wind energy has offered a range of advantages, as technology already developed along with a prospection on the market. A comprehensive assessment of wind resources is required to absorb the entire gain of wind power. Thus, the main goal of this work is to test how large eddy simulation (LES) alongside immersed boundary method (IB) behaviours, in order to characterize the most important parameters to a small wind turbine aerodynamics. The LES method is responsible for the solution of the filtered proprieties related to the flow field over the eulerian referential, while the IB method solves the problems related to fluid-structure interaction, where the forces are assessed at the solid-fluid interface, which corresponds to the lagrangian formulation. For the eulerian referential, the momentum and mass balance equation provide the filtered velocity and pressure fields. However, the velocity field and position provided from eulerian referential are transferred to lagrangian points, in order to calculate the velocity of the body movement at the lagrangian points, after that calculates the force at those points. Later, this force is also distributed over the eulerian domain, and the cycle continues iteratively.
Keywords
Large Eddy Simulation, Immersed Boundary Method, wind turbine
