Theoretical and computational investigations of the optimal tip-speed ratio of horizontal-axis wind turbines

Bakırcı, Mehmet; Yılmaz, Sezayi

doi:10.1016/j.jestch.2018.05.006

Cited by 35 publications

(25 citation statements)

References 4 publications

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“…The relationship of rotation with blade radius and wind speed is an essential factor in optimizing the geometry of the horizontal axis wind turbine (HAWT); the design tip speed ratio (DTSR) [11]. It has determined as follows:…”

Section: Tip Speed Ratiomentioning

confidence: 99%

Performance Analysis of Small Horizontal Axis Wind Turbine with Airfoil NACA 4412

Widiyanto

Pramonohadi²,

Ridwan

2021

International Journal of Science, Technology & Management

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The horizontal axis wind turbine (HAWT) design with low wind speed requires blade geometry selection. The analysis uses the potential flow panel method and the integral boundary layer formulation to analyze wind flow around the airfoil. The blade design with the blade element momentum (BEM) theory has an aerodynamic coefficient value along the blade. Power wind calculates to model the wind shear pressure at each blade. This research aims to determine the wind turbine rotor based on the performance, including the power coefficient, tip speed ratio, power, and rpm. The simulation uses an airfoil NACA 4412 which has optimal coefficient lift (Cl) = 1.92 at 190 pitch of angle, coefficient drag (Cd) = 0.0635 at 130 pitch angle and Cl / Cd = 155 at tilt angle = 40. Five models of 2.5 m diameter blades with different angles for each chord. The test results show that the change in the speed ratio affects the power coefficient so that the optimal power coefficient on NACA 4412 in experiment 5 is 0.56, and change in rotation per minute affects the output power so that the rotation per minute and the optimal power in experiment 4 with a value of 374 rpm and 553 W.

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Section: Tip Speed Ratiomentioning

confidence: 99%

Performance Analysis of Small Horizontal Axis Wind Turbine with Airfoil NACA 4412

Widiyanto

Pramonohadi²,

Ridwan

2021

International Journal of Science, Technology & Management

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“…When it comes to managing power the partial admission turbine plays an important role as it strengthens the unsteady flow. Several other theories were used throughout the ages and have been improving and developing the present day turbines with higher efficiency [2,4,6,9].…”

Section: Literature Review Theoretical Analysis On Axial Flow Turbinementioning

confidence: 99%

The Numerical Simulation and Evaluation of Aircraft Engine Axial Flow Turbine using Numerical Techniques

al.¹

2019

IJMPERD

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This research aims to improve the efficiency of an axial flow turbine by improving the boundary conditions. In the baseline paper, Sherwood number, Nusselts number for a given flow were determined. The pressure ratio was not considered in the paper. Research has been done to improve the values by considering the pressure difference which was neglected in the base line paper. Axial flow turbines expand the flow passing through it. Losses like tip losses, efficiency losses and loss on blades due to heat are high and needs to be looked after. A comprehensive literature study was carried out for the better understanding of axial flow turbines, recent developments and to analyze the control of loses.

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“…Currently, the BEM theory has been used the most to evaluate the performance of wind turbines. This mathematical model is defined by the combination of the Momentum Theory and the Blade Element (Bakırcı & Yılmaz, 2018;Manwell et al, 2009). Manwell et al (2009) and Letcher (2017) state that the application of BEM theory is enough in the rotor design of the wind turbine.…”

Section: Introductionmentioning

confidence: 99%

Parametric study of a horizontal axis wind turbine with similar characteristics to those of the Villonaco wind power plant

Sánchez

Hidalgo

Velasco

et al. 2021

J APPL RES TECH ENG

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<p class="JAREAbstract">The present paper focuses on the selection of parameters that maximize electrical energy production of a horizontal axis wind turbine using Python programming language. The study takes as reference turbines of Villonaco wind field in Ecuador. For this aim, the Blade Element Momentum (BEM) theory was implemented, to define rotor geometry and power curve. Furthermore, wind speeds were analyzed using the Weibull probability distribution and the most probable speed was 10.50 m/s. The results were compared with mean annual energy production of a Villonaco’s wind turbine to validate the model. Turbine height, rated wind speed and rotor radius were the selected parameters to determine the influence in generated energy. Individual increment in rotor radius and rated wind speed cause a significant increase in energy produced. While the increment in turbine’s height reduces energy generated by 0.88%.</p>

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Theoretical and computational investigations of the optimal tip-speed ratio of horizontal-axis wind turbines

Cited by 35 publications

References 4 publications

Performance Analysis of Small Horizontal Axis Wind Turbine with Airfoil NACA 4412

Performance Analysis of Small Horizontal Axis Wind Turbine with Airfoil NACA 4412

The Numerical Simulation and Evaluation of Aircraft Engine Axial Flow Turbine using Numerical Techniques

Parametric study of a horizontal axis wind turbine with similar characteristics to those of the Villonaco wind power plant

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