Performance Enhancement Analysis of a Horizontal Axis Wind Turbine by Vortex Trapping Cavity

Qaissi, Khaoula; Elsayed, Omer; Faqir, Mustapha; Essadiqi, E.

doi:10.1115/1.4052980

Cited by 3 publications

(2 citation statements)

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“…The same numerical setup that was previously presented is used for all wind speeds. This wind turbine has been extensively studied by the authors in previous works [8,62], and the two-dimensional and three-dimensional flow field characteristics have been analyzed as a preliminary study for future control applications. As shown in Figure 6a,b, the numerical method used in this work is able to closely predict the experimental torque and thrust values for the investigated range of wind speeds.…”

Section: Numerical Model Validationmentioning

confidence: 99%

“…A potential solution to improve existing wind turbines is the addition of flow-control devices to the rotor blades. Flow control devices can effectively prevent or delay flow separation and suppress turbulence resulting in improved aerodynamic and aeroacoustics performance, load reduction, fluctuation suppression, and ultimately increased wind turbine power output [5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Aerodynamic Optimization of Trailing-Edge-Serrations for a Wind Turbine Blade Using Taguchi Modified Additive Model

Qaissi¹,

Elsayed²,

Faqir³

et al. 2023

Energies

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For the rotor, achieving relatively high aerodynamic performance in specific wind conditions is a long-term goal. Inspired by the remarkable flight characteristics of owls, an optimal trailing edge serration design is investigated and proposed for a wind turbine rotor blade. Fluid flow interaction with the proposed serrations is explored for different wind conditions. The result is supported by subsequent validation with three-dimensional numerical tools. The present work employs a statistical-numerical method to predict and optimize the shape of the serrations for maximum aerodynamic improvement. The optimal combination is found using the Taguchi method with three factors: Amplitude, wavelength, and serration thickness. The viability of the solution on an application is assessed using the Weibull distribution of wind in three selected regions. Results show that the presence of serration is capable of improving the annual power generation in all the investigated cities by up to 12%. The rated speed is also shifted from 10 m/s to 8 m/s for most configurations. Additionally, all configurations show similar trends for the instantaneous torque, where an increase is observed in pre-rated speed, whereas a decrease is noticed in the post-rated speed region. A look at the flow field pattern for the optimal design in comparison with the clean blade shows that the modified blade is able to generate more lift in the pre-stall region, while for the post-stall region, early separation and increased wake dominate the flow.

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Section: Numerical Model Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Aerodynamic Optimization of Trailing-Edge-Serrations for a Wind Turbine Blade Using Taguchi Modified Additive Model

Qaissi¹,

Elsayed²,

Faqir³

et al. 2023

Energies

Self Cite

View full text Add to dashboard Cite

show abstract

Optimization of the Aeroacoustics and Aerodynamics of a Wind Turbine Airfoil with Serrations Using Multi-Criteria Decision Making

Qaissi,

Elsayed,

Faqir

et al. 2023

2023 10th International Conference on Recent Advances in Air and Space Technologies (RAST)

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Experimental and Simulation Investigation of J-Shaped and Kammtail Virtual Airfoils in Small-Scale Horizontal Axis Wind Turbines

Al Hamad,

Abousabae,

Shaker

et al. 2024

Journal of Fluids Engineering

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In this work, the performance of new wind blade designs for small-scale horizontal axis wind turbines (HAWTs) was studied and compared with the performance of a baseline design. The studied designs were J-shaped and Kammtail Virtual Foil profiles. Three J-shaped pressure-side truncation ratios and two KVF truncation ratios were studied. All proposed cases were first investigated in a two-dimensional simulation study to get the lift-to-drag ratio by applying different wind speeds and angles of attack. The baseline design was experimentally investigated. Output power was measured using a digital rotary torque sensor at three wind speeds. The tip speed ratio was calculated after measuring each wind speed's free rotating revolutions. Three wind speeds and experimental TSRs were used in three-dimensional simulations to capture the performances of the proposed cases and compare them with the baseline. The simulation investigation was carried out for lab-scale and scaled cases. The three-dimensional study found that the J-shaped blades enhanced the performance of the HAWTs for both lab-scale and scaled cases. J-shaped blades with a 1/3 opening ratio yielded an average power coefficient enhancement of around 1.56% and 4.16% for lab-scale and scaled cases, respectively. J-shaped blades with a 2/3 opening ratio enhanced the average power coefficient for lab-scale and scaled cases. Furthermore, it was found that the KVF blades diminished the performance for both lab-scale and scaled cases.

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Performance Enhancement Analysis of a Horizontal Axis Wind Turbine by Vortex Trapping Cavity

Cited by 3 publications

References 0 publications

Aerodynamic Optimization of Trailing-Edge-Serrations for a Wind Turbine Blade Using Taguchi Modified Additive Model

Aerodynamic Optimization of Trailing-Edge-Serrations for a Wind Turbine Blade Using Taguchi Modified Additive Model

Optimization of the Aeroacoustics and Aerodynamics of a Wind Turbine Airfoil with Serrations Using Multi-Criteria Decision Making

Experimental and Simulation Investigation of J-Shaped and Kammtail Virtual Airfoils in Small-Scale Horizontal Axis Wind Turbines

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