E3S Web Conf.
Volume 336, 2022The International Conference on Energy and Green Computing (ICEGC’2021)
|Number of page(s)||6|
|Published online||17 January 2022|
Optimal design of an horizontal axis wind turbine using blade element momentum theory
Department of physics, Energetic Laboratory, Sciences Faculty AEU, Tetouan, Tetouan 93030, Morocco
* Corresponding author: firstname.lastname@example.org
The aerodynamic modelling of the wind turbine blades is a vital step in the design of the turbine. Several design methods are available for the aerodynamic design of the rotor, however, in this study a mathematical model based on blade element momentum concept is applied. the purpose of this work is to optimize the distribution of chord and twist angle along the blade span of a 20 KW HAWT using the BEM method, the blade design parameters such as the optimum lift and drag coefficient , chord and twist angle, the axial induction factor(a) and the angular induction factor(a’) of the designed HAWT are codified and estimated using the MATLAB software. The results of the analysis show on the one hand a decrease in chord length and twist angle along the blade length and on the other hand the maximum values that can be achieved by the axial and angular inductions factors are respectively 0.3325 and 0.175. This approach can be effectively implemented for the analysis of HAWTs operating at different characteristics of the designed blade.
Key words: BEM method / S809 airfoil / Horizontal axis wind turbine / Tip speed ratio / chord and twist distribution / aerodynamic study / inductions factors
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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