Authors : Balasem Abdulameer Jabbar, Nor Zelawati Binti Asmuin, Sofian Bin Mohd, Mohammed Najeh Nemah, Salih Meri, Mohamad Nur Hidayat Mat and Ayad Jasim Jabber
Abstract: Enclosing of horizontal axis wind turbine in diffuser is among techniques of wind power augmentation, especially, in urban areas. In this study, a small scale of Flanged Diffuser Augmented Wind Turbine (FDAWT) was presented in a two flanges angles configurations of 0 and 5°. The models of rotor and diffusers were fabricated and experimented in the wind tunnel. The experimental tests were conducted to calculate the power at a different wind velocities ranged 5-9 m/sec. The performance tests were in terms of power coefficient and torque coefficient as a function of the tip speed ratio. The results show a significant increase in the power coefficient of FDAWT up to 1.58 compared to Non-Flanged Diffuser Augmented Wind Turbine (NFDAWT) while the augmentation factor in power coefficient reached to 2.8 compared to Bare Horizontal Axis Wind Turbine (BHAWT). On another hand, the experiments results were validated with CFD simulation results for all cases within accepted error ratio. Moreover, CFD provided a clear visualization for the flow across wind turbine.
Balasem Abdulameer Jabbar, Nor Zelawati Binti Asmuin, Sofian Bin Mohd, Mohammed Najeh Nemah, Salih Meri, Mohamad Nur Hidayat Mat and Ayad Jasim Jabber, 2019. Influence of Flanged Diffuser on Performance of Diffuser Augmented Wind Turbine. Journal of Engineering and Applied Sciences, 14: 9162-9170.