Abstract—The effect of blade number on small Horizontal
Axis Wind Turbine (HAWT) has been studied experimentally
and numerically in this research. The turbine blade is made of a
flat metal sheet and the tip was formed to shape a winglet. The
5-blades turbine was tested inside a wind tunnel for
performance investigation at different wind speeds. The
experiment was conducted under various wind speed, i.e. 3.5
m/s, 3.9 m/s, 4.3 m/s, 4.6 m/s dan 5 m/s. Furthermore, three
wind turbines geometry with different blade number (3, 4, and
5 blades) were built for numerical study purpose by using Ansys
Fluent and the results were compared to the experimental one.
The results show that the blade number does increase the wind
turbine torque and there is also more power generated from the
turbine with more blade numbers since torque is related to
pressure. Moreover, the winglet helps the blade to retain the
flow and increases the pressure on the blade surface. However,
the experimental measurements obtained were smaller than the
numerical predictions about 50% on the average since more
unidentified losses existed and not accounted for the calculation.
Index Terms—Computational fluid dynamics, blades number, horizontal axis wind turbine, wind energy, performance.
Andi F. Sudarma and Subekti Subekti are with the Department of Mechanical Engineering, Universitas Mercu Buana, Jakarta, 11650, Indonesia (e-mail: firstname.lastname@example.org, email@example.com).
Muhammad Kholil and Indra Almahdy are with the Department of Industrial Engineering, Universitas Mercu Buana, Jakarta, 11650, Indonesia (e-mail: firstname.lastname@example.org, email@example.com).
Cite: Andi F. Sudarma, Muhammad Kholil, Subekti Subekti, and Indra Almahdy, "The Effect of Blade Number on Small Horizontal Axis Wind Turbine (HAWT) Performance: An Experimental and Numerical Study," International Journal of Environmental Science and Development vol. 11, no. 12, pp. 555-560, 2020.Copyright © 2020 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).