ISSN: 1304-7191 | E-ISSN: 1304-7205
Study of the physical structure and performance of vertical wind turbines evaluated by bio-mimicry Dipterocarpus alatus, Part 1
1Wind Energy and Energy Storage Systems Centre (WEESYC), Faculty of Environmental Management, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Centre of Excellence in Materials Engineering (CEME), Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
2Department of Sustainable Energy Management, Faculty of Environmental Management, Prince of Songkla University, Hat Yai 90110, Thailand
3Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, 50200, Thailand
4School of Engineering and Technology Academic Building 4, Walailak University, 222 Thaiburi, Thasala District Nakhon Si Thammarat, 80160, Thailand
Sigma J Eng Nat Sci 1561-1571 DOI: 10.14744/sigma.2026.02050
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Abstract

The design of the blades of wind turbines can take inspiration from biomimicry techniques. The survival of natural designs through natural selection acts as the model. One example is the case of Dipterocarpus alatus, which has a “flying flower” component for plant propagation. This investigation studied the characteristics of Dipterocarpus alatus in terms of its geometri-cal properties for use in vertical axis wind turbine (VAWT) blades. A biological method that involves designing blades that mimic the shape of the flying flower was adopted  since the geometric features of flying flowers allow them to generate lift with relatively little wind. This study involves the examination of VAWTs. The wind turbine blades were designed to achieve optimum rotational speed (RPM) in low-speed wind environments by studying the charac-teristics of Dipterocarpus alatus in terms of blade geometry, blade characteristics, number of blades, angle, and aspect ratio (AR) in a wind tunnel at wind speeds of 1 to 10 m/s. The most effective VAWT model was found to comprise 3 Blades: AR =1.5, 120o Twist, 30o Attack, with a cut-in wind speed of 1.75 m/s. This configuration offers low cost when compared with the 4-blade alternative. The results of this study indicate that a wind turbine with specific condi-tions is suitable for the development of small wind turbines.