Volume 20, Issue 7 (July 2020)
Modares Mechanical Engineering 2020, 20(7): 1773-1788 |
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Taban A, Jalali A, Zamani M. Effect of Blade Angle of Attack on the Performance of the Darius J-Shaped Vertical Axial Wind Turbine. Modares Mechanical Engineering 2020; 20 (7) :1773-1788
URL: http://mme.modares.ac.ir/article-15-36996-en.html
URL: http://mme.modares.ac.ir/article-15-36996-en.html
1- Mechanical Engineering Departement, Engineering Faculty, Payam-e-Noor University, Tehran, Iran
2- Mechanical Engineering Departement, Engineering Faculty, Payam-e-Noor University, Tehran, Iran ,a_jalali@pnum.ac.ir
3- Wind Sun Research Center, Ferdowsi University of Mashhad, Mashhad, Iran
2- Mechanical Engineering Departement, Engineering Faculty, Payam-e-Noor University, Tehran, Iran ,
3- Wind Sun Research Center, Ferdowsi University of Mashhad, Mashhad, Iran
Abstract: (7588 Views)
Humans are always looking for ways to produce cheap and permanent electricity. One of these ways is to use wind turbines. The vertical axis wind turbines are less sensitive due to the problem of the setup and low efficiency compared to the horizontal axis turbines. One way to improve the performance of VAWTs is to change the angle of attack of the wind turbine blade. In this study, the computational fluid dynamics method is used to solve the finite volume flow equations. Different angles of attack range from -12 to +10 degrees and wind speeds of 10m/s and density of 1.225kg/m3 and constant dynamic viscosity of 1.825psi were used. The calculations showed that by increasing the angle of attack of the blade to +10 degrees Cp and Torque decreased, by decreasing angle of attack of the blade to -4 degree, Cp and Torque increased, but by more decreasing AOA of -8 to -12 degrees Cp and torque decreased.
Keywords: Vertical Axis Wind Turbine of Darrius, J-Shape Blade, 2D Simulation, Angle of Attack (AoA)
Article Type: Original Research |
Subject:
Aerodynamics
Received: 2019/10/21 | Accepted: 2020/03/22 | Published: 2020/07/20
Received: 2019/10/21 | Accepted: 2020/03/22 | Published: 2020/07/20
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