Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
Aerodynamic assessment of Göttingen airfoil for application in small horizontal axis windmills
Submission Author:
Thiago Canale , SP
Co-Authors:
Thiago Canale, Kamal Ismail, Fátima Lino
Presenter: Thiago Canale
doi://10.26678/ABCM.ENCIT2018.CIT18-0429
Abstract
The climatic changes, global heating and the associated drastic changes obliged the decision makers to establish policies to reduce ambient aggressions and offensive greenhouse gases (GHG). Intensive research and developments were and still dedicated to reduce GHG emissions and provide sustainable alternative energy sources to the world. Wind energy is at the top of the list since the technology is well developed and accepted by the populations. Much work is still needed to develop efficient and relatively cheap small windmills and popularize their use for generating energy for isolated areas and individual consumers far from the main grid. This paper investigates Göttingen airfoils as alternative airfoils for possible use in small windmills and compares their aerodynamic performance with the SERI airfoils. The blade elements momentum theory was used to evaluate the aerodynamic performance of the windmill rotor. Comparison of the predicted rotors with available data for other rotors indicated that the calculation procedure and the interpolation scheme together with Xfoil are adequate tools for predicting the aerodynamic performance. The results show that the Göttingen airfoil fixation area promotes high mechanical resistance and that the rotor shows narrow tip chord and large root chord and hence light blade tip and strong blade root.
Keywords
SERI airfoils family, Gottingen airfoils, small power windmills, isolated areas, wind energy
