Enhancing Stability through Experimental Research on the Flapped Horizontal Axial Wind Turbine

Qassim Wanis . M; Muhammad A.R. Yass; Ahmed Kamil  Hasan

doi:10.30572/2018/KJE/170125

Authors

Qassim Wanis . M Electromechanical Engineering Department, University of Technology, Baghdad, Iraq
Muhammad A.R. Yass Electromechanical Engineering Department, University of Technology, Baghdad, Iraq
Ahmed Kamil Hasan Electromechanical Engineering Department, University of Technology, Baghdad, Iraq

DOI:

https://doi.org/10.30572/2018/KJE/170125

Keywords:

Horizontal Wind Turbine (HAWT), Multi Section Wind Turbine Blade, design winglet, design fences, flaps

Abstract

This study examines the effects of changing flap angles on the aerodynamic performance of a wind turbine blade, concentrating on torque coefficient (Cm), thrust coefficient (Ct), power coefficient (Cp), and power in watts over a range of rotational speeds. The results show that adding a flap considerably increases Cp and Cm, especially at low-to-moderate speeds. The maximum power and torque values are produced using a 6° flap. The 6° flap design in particular exhibits improved energy collection capabilities, with a maximum Cp gain of almost 20% above the baseline (0° flap). Notable gains in Cm are also seen, with the 6° flap offering a peak torque up to 25% greater than the baseline, indicating possible advantages for starter torque under specific conditions. at low wind speeds. A moderate flap angle of 4° increases thrust without overtaxing the blade structure at higher speeds, resulting in the best balanced improvement for Ct. The results show that a flap angle of 4° offers the best balance, boosting stability and efficiency; however, larger angles (6°) may cause excessive drag and structural loads at high speeds. German cod is used to calculate the geometrical data.According to this study, wind turbine blade design is optimized for better performance in low wind speed conditions

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