Aerodynamic performance of a horizontal axis wind turbine with forward and backward swept blades
Küçük Resim Yok
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE BV
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Blades are the most important components of wind turbines in order to convert wind energy to mechanical energy. This study investigates the aerodynamic performance of Horizontal Axis Wind Turbines (HAWTs) with forward and backward swept blades. The effect of the blade sweep direction, the location of the sweep start up and the tip offset on the aerodynamic performance are investigated using a model HAWT with a 0.9 m rotor as the baseline configuration. Changes in power and thrust coefficients with swept blades are investigated for the design tip speed ratio of the baseline wind turbine at a wind speed of 10 m/s. The wind turbine with the forward swept blade that has sweep start up at r(ss)/R = 0.15 and tip offset of d/D = 0.2 has been found to give a remarkable boost to the power output with an increase of about 2.9% over the baseline turbine. The backward swept blade with r(ss)/R = 0.75 and d/D = 0.2 has shown the highest reduction in thrust coefficient, namely 5.4%, at the design tip speed ratio. In conclusion, it is found that the forward swept blades have the ability of increasing the performance while the backward swept blades tend to decrease the thrust coefficient.
Açıklama
Anahtar Kelimeler
Swept blade, Horizontal axis wind turbine, Aerodynamics, CFD, Power coefficient
Kaynak
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
176
