Wind Blade Twist Correction for Enhanced Annual Energy Production of Wind Turbines

Debbache, Mohammed; Hazmoune, Messaoud; Derfouf, Semcheddine; Ciupăgeanu, Dana-Alexandra; Lăzăroiu, Gheorghe

doi:10.3390/su13126931

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…In addition to the environmental conditions, the blade shape together with the tip speed ratio (TSR) affect the output power and the noise. The role of the blade geometry, in terms of the blade section (airfoil) and the distributions of the chord and the twist angle (the angle between the plane of the rotation and the chord line), has been extensively investigated [4][5][7][8][9]. The role of the TSR has also been received attention from researchers.…”

Section: Introductionmentioning

confidence: 99%

Effect of tip speed ratio on the aerodynamic noise of a small wind turbine: An optimization study

Pourrajabian

Dehghan

Rahgozar

et al. 2022

J. Phys.: Conf. Ser.

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A dual-objective optimization study was carried out to illuminate how the tip speed ratio of a small wind turbine affects the aerodynamic noise as well as the blade geometry. A 0.75 kW three-bladed small horizontal axis wind turbine was selected as the case study. Two important goals were considered in the study: maximization of the output power and the minimization of the aerodynamic noise. The former was calculated by the well-known blade-element momentum theory while a validated semi-empirical model was adopted for the computation of the latter. A combination of these goals defined the objective function and the weighted-sum approach was employed to find the optimal values for the design variables of the optimization including the distributions of the chord and the twist angle along the blade together with the tip speed ratio. The extracted power was calculated at the rated wind speed of 10 m/s while the noise was computed at lower wind speeds of 5 and 7.5 m/s. The genetic algorithm technique was adopted for the muti-objective optimization. The results revealed the importance of the blade tip region in producing the emitted aerodynamic noise. Specifically, an increase in the chord and twist values near the tip results in the reduction in the emitted noise. Results also show that a good compromise between the two goals is achievable such that a noticeable reduction in the emitted aerodynamic noise is attainable in exchange for a very small drop in the power coefficient. The optimization results also indicated that the noise could be adequately reduced at the smaller value of the tip speed ratio without a large reduction in output power which is due to the decrease in the rotational speed of the turbine.

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Section: Introductionmentioning

confidence: 99%

Effect of tip speed ratio on the aerodynamic noise of a small wind turbine: An optimization study

Pourrajabian

Dehghan

Rahgozar

et al. 2022

J. Phys.: Conf. Ser.

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“…Figure 1 is a schematic diagram of hydrogen production using a horizontal axis offshore floating wind turbine. Compared with the horizontal axis offshore wind turbine commonly used in wind farms, VAWT has its own unique advantages and has great research significance [6,7]:…”

Section: Introductionmentioning

confidence: 99%

Modeling and Investigation of Blade Trailing Edge of Vertical Axis Offshore Wind Turbine

et al. 2021

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In this study, the structure of the trailing edge of the vertical axis offshore wind turbine blade is modified. First, according to the method of parameterization, the offshore wind turbine model is established, and a series of characteristics of the offshore wind turbine are obtained. Second, we add flaps with different lengths to the trailing edge of NACA0021 airfoil to obtain different dynamic characteristics. The angle of the additional trailing edge flaps is modified. Finally, a simulation model for the modified airfoil of the vertical axis offshore wind turbine is reestablished, and the variable characteristics of the performance is studied. Through the optimization and analysis of the blade structure, this study has obtained the best parameters of the length and angle of the offshore wind turbine blade trailing edge flap. The optimization of the blade structure changes the flow field around the blade, which significantly improves the maximum wind energy capture rate and self-starting ability of the vertical axis offshore wind turbine.

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On the importance of the root-to-hub adapter effects on HAWT performance: A CFD-BEM numerical investigation

Mauro

Lanzafame

Messina

et al. 2023

Energy

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Wind Blade Twist Correction for Enhanced Annual Energy Production of Wind Turbines

Cited by 5 publications

References 24 publications

Effect of tip speed ratio on the aerodynamic noise of a small wind turbine: An optimization study

Effect of tip speed ratio on the aerodynamic noise of a small wind turbine: An optimization study

Modeling and Investigation of Blade Trailing Edge of Vertical Axis Offshore Wind Turbine

On the importance of the root-to-hub adapter effects on HAWT performance: A CFD-BEM numerical investigation

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