NACA2412 airfoil based method for design and aerodynamic analysis of small HAWT using modified BEM approach

Jha, Devashish; Saurabh, Saket

doi:10.2516/stet/2022023

Cited by 2 publications

(2 citation statements)

References 17 publications

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“…Figure 5 shows the twist/chord values determined along the blade length by putting k = 1 in the objective function (Equation ( 14)) and ideal Equations ( 17) and (18). It can be observed that the distributions obtained from the DE 9 International Journal of Energy Research method are similar to the distributions acquired from the ideal equations.…”

Section: Validation Of the Optimizationmentioning

confidence: 74%

“…The new designs were capable of generating the same amount of power as the reference turbine but at lower wind speeds, indicating better overall performance. Jha and Saurabh [18] proposed a computational approach for designing blades for SHAWTs operating under wake rotation. The proposed procedure utilized the NACA2412 airfoil and analyzed important parameters to obtain accurate blade design and performance.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Study of the Blade Number and Airfoil Profile Impacts on the Twist/Chord Distribution of a Small Wind Turbine Blade

Akbari,

Naghashzadegan,

Kouhikamali

et al. 2023

International Journal of Energy Research

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The blade number and airfoil profile effects on the blade shape of a small horizontal-axis wind turbine (SHWT) were investigated. For this purpose, the NACA4412, SG6042, and SG6043 airfoils, as well as 2, 3, and 4 blades, were considered. Then, two optimization processes were used: first, the blades were designed to maximize the power coefficient ( C p ), and then a multiobjective optimization that included both maximizing C p and maximizing the starting torque ( Q s ) was employed. The differential evolution (DE) algorithm was employed to perform the optimization, and the blade element momentum aerodynamic approach was used to conduct the relevant computations. Also, to ensure the performance of the optimal blades, the computational fluid dynamics method was employed as well. The findings revealed that regardless of the number of blades and the type of airfoil, raising the twist angle ( θ p ) and chord length ( c ) along the radial direction of the blade, especially at the root part, helps increase the Q s . It was observed that increasing the number of blades does not have a significant effect on the θ p distribution of the selected airfoils, but the c of the blades fitted with all three airfoils decreases. Regardless of the number of blades, while the geometry of blades utilizing the NACA4412 and SG6042 airfoils are close to each other, the blade with the SG6043 airfoil has the shortest c , which reduces the generated Q s of blades fitted with this airfoil. The results also establish that by increasing the number of blades from 2 to 3, the power coefficient ( C p ) of the blades fitted with all three airfoils increases, but by further increasing the number of blades from 3 to 4, the change in C p completely depends on the airfoil profile.

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Section: Validation Of the Optimizationmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%