EXPERIMENTAL AND NUMERICAL INVESTIGATIONS ON THE AERODYNAMIC PERFORMANCE OF A HINGED BLADED VERTICAL AXIS WIND TURBINE

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AMIRI MARYAM; KAHROM MOHSEN; TEYMOURTASH ALIREZA

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Journal: Modares Mechanical Engineering Year:2017 | Volume:17 | Issue:5 Page(s): 21-30

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Title

EXPERIMENTAL AND NUMERICAL INVESTIGATIONS ON THE AERODYNAMIC PERFORMANCE OF A HINGED BLADED VERTICAL AXIS WIND TURBINE

Author(s)

AMIRI MARYAM | KAHROM MOHSEN | TEYMOURTASH ALIREZA | Issue Writer Certificate

Keywords

VERTICAL AXIS WIND TURBINEQ2

AERODYNAMIC PERFORMANCEQ1

MULTIPLE REFERENCE FRAMEQ1

END PLATESQ1

Abstract

One of the disadvantages of drag driven VERTICAL AXIS WIND TURBINEs, is low AERODYNAMIC PERFORMANCE of the turbine which is mainly due to adverse torque of the returning blade. A recently introduced design suggests using opening/closing blades for the rotor to eliminate the negative torque of the returning blade. In this study, the AERODYNAMIC PERFORMANCE of the newly proposed turbine has been investigated experimentally and numerically. The experimental measurements are performed in a subsonic open-jet type wind tunnel facility. However, the numerical simulations are performed using the Ansys-Fluent commercial software, and the MULTIPLE REFERENCE FRAME model (MRF). The effects of the number of blades (3, 4 and 6-bladed), END PLATES and turbulence intensity on the torque and power coefficients are examined in detail in several Reynolds numbers. Results show that the new rotor has no negative torque in one complete revolution and the 3-bladed rotor has the best AERODYNAMIC PERFORMANCE in such a way that it reaches a maximum power coefficient of 0.21 at TSR=0.5. Although increasing the number of blades decreases the output torque oscillations, it also decreases the average power coefficient of the rotor. Results also show that, Reynolds number does not have significant effects on the average power coefficients of the rotors in the studied range of Reynolds numbers, 7.7´104£Re£1.2´105.

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APA: Copy

AMIRI, MARYAM, KAHROM, MOHSEN, & TEYMOURTASH, ALIREZA. (2017). EXPERIMENTAL AND NUMERICAL INVESTIGATIONS ON THE AERODYNAMIC PERFORMANCE OF A HINGED BLADED VERTICAL AXIS WIND TURBINE. MODARES MECHANICAL ENGINEERING, 17(5 ), 21-30. SID. https://sid.ir/paper/179207/en

Vancouver: Copy

AMIRI MARYAM, KAHROM MOHSEN, TEYMOURTASH ALIREZA. EXPERIMENTAL AND NUMERICAL INVESTIGATIONS ON THE AERODYNAMIC PERFORMANCE OF A HINGED BLADED VERTICAL AXIS WIND TURBINE. MODARES MECHANICAL ENGINEERING[Internet]. 2017;17(5 ):21-30. Available from: https://sid.ir/paper/179207/en

IEEE: Copy

MARYAM AMIRI, MOHSEN KAHROM, and ALIREZA TEYMOURTASH, “EXPERIMENTAL AND NUMERICAL INVESTIGATIONS ON THE AERODYNAMIC PERFORMANCE OF A HINGED BLADED VERTICAL AXIS WIND TURBINE,” MODARES MECHANICAL ENGINEERING, vol. 17, no. 5 , pp. 21–30, 2017, [Online]. Available: https://sid.ir/paper/179207/en

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