Eventos Anais de eventos
EPTT 2024
14th Spring School on Transition and Turbulence
Analysis of vorticity transport in separated flows over wind turbine airfoils using Detached-Eddy Simulations
Submission Author:
Gabriel Pinto , SP
Co-Authors:
Gabriel Pinto, Luiz Augusto Camargo Aranha Schiavo, Daniel Sampaio Souza
Presenter: Gabriel Pinto
doi://10.26678/ABCM.EPTT2024.EPT24-0008
Abstract
The dynamics of the structures on the separated flow over a wind-turbine airfoil is investigated through detached-eddy simulations. Two simulations considering periodicity in the spanwise direction were carried out, one with a spanwise extent equal to 30% of the chord and one with an extent of 60% of the chord. The open-source platform OpenFOAM was used to run the simulations at a Reynolds number, based on the chord, equal to 10^5. The purpose is to validate a set of data to investigate the transport of spanwise vorticity in the region of separated flow, since the balance of this quantity is of fundamental importance for the effect of rotation on the aerodynamic of horizontal-axis wind turbines’ blade sections. The comparison between the two simulations show a good convergence of the time-averaged aerodynamic force with the domain width but significantly stronger fluctuations for the case with narrower domain. We will further use the data to investigate the contribution of each transport mechanism to the balance of spanwise vorticity.
Keywords
HAWT, Separated Flow, Finite volume method, Detached-Eddy Simulations (DES)
