Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
Aerodynamic Heating Effect on Roughness, Aerodynamic Coefficients and Power Output of Aerogenerators: A Discussion
Submission Author:
Daniel Garcia-Ribeiro , SP
Co-Authors:
Daniel Garcia-Ribeiro, Hernán Cerón-Muñoz, Pedro David Bravo-Mosquera
Presenter: Daniel Garcia-Ribeiro
doi://10.26678/ABCM.ENCIT2018.CIT18-0265
Abstract
The aerodynamic heating effect is well known to have great impact on the design of high speed aircrafts or reentry vehicles, i.e. for supersonic or hypersonic speeds, because its effects are minimal for subsonic speed, so they are usually ignored. This work comes with the objective of checking the aerodynamic heating effects on airfoils of big wind turbines. Precisely, it is discussed if the temperature during operation of the blades can change the roughness of their airfoils, if there is uniform heating that leads to heat convection from the airfoil or if there is considerable difference in extrados and intrados temperature. The computational approach is done with numerical simulation to solve the two-dimensional, steady and turbulent form of the Reynolds-Average Navier-Stokes equations in the CFD software ANSYS CFX. It was not observed any significant performance of the cases listed, so the operation conditions of the current biggest wind turbines and the ones that will be possible developed in the next years are not expected to be jeopardized by the aerodynamic heating of the turbine blades.
Keywords
Aerodynamic heating, wind turbine blades, aerodynamic coefficients
