Analysis of horizontal axis wind turbine blade using CFD

Nigam, P. K.; Tenguria, Nitin; Pradhan, Mohan Kumar

doi:10.4314/ijest.v9i2.5

Cited by 15 publications

(9 citation statements)

References 28 publications

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“…It was shown that as the wind speed was increased, the sliding ratio was increased as well while the maximum sliding ratio occurs at specific angle of attack associated to the airfoil. A similar aerodynamic performance study was conducted by Nigam et al [17] and Koç et al [18] to determine the , , sliding ratio and of HAWTs using the CFD method.…”

Section: A Wind Conditionsmentioning

confidence: 99%

“…Experimentally, the measurement is made in wind tunnel as has been done for aerofoil used in aeroplane industries. In recent years, several researchers have conducted studies to determine and using computational fluid dynamics (CFD) [16][17][18]. Furthermore, it can also be done through analytical method such as in XFOIL software…”

Section: Fig7forces and Velocities On An Airfoilmentioning

confidence: 99%

See 1 more Smart Citation

Aerodynamic Performances of Small Scale Horizontal Axis Wind Turbine Blades for Applications in Malaysia

Roslan,

Rasid,

Toh

et al. 2019

IJRTE

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Wind energy is one of the most viable options for clean and sustainable energy production. In Malaysia where wind source has been considered scarce, the capacity of installed wind energy production is very low. However, studies have shown that it is worthwhile to produce wind energy at several potential sites in this country. For this purpose, it is crucial that the designed turbine blade gives the highest possible blade power efficiency while structure wise, the turbine blade need to be effective in terms of avoiding possible failures. The maximum power efficiency means the blade does not only provide profile that gives maximum sliding ratio but also it must operate at the corresponding angle of attack, 𝜶𝒎𝒂𝒙 that gives this ratio. At the same time, the blade must be small enough to have low weight to allow it to self-start in the low wind region. In this paper, the study is focused on the aerodynamic aspect of the design of wind turbine blade that will give the maximum power efficiency. Four factors that determine aerodynamic performance of the turbine blades are discussed: the wind condition, the airfoil profile, the blade geometry and the losses. In most of the factor, adjustments are made such that the blade operates at around the 𝜶𝒎𝒂𝒙 so that the sliding ratio and thus power coefficient are maximum.

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Section: A Wind Conditionsmentioning

confidence: 99%

Section: Fig7forces and Velocities On An Airfoilmentioning

confidence: 99%

Aerodynamic Performances of Small Scale Horizontal Axis Wind Turbine Blades for Applications in Malaysia

Roslan,

Rasid,

Toh

et al. 2019

IJRTE

View full text Add to dashboard Cite

show abstract

“…This integrates the principle aerodynamic effect of wind speed, rotor size, and rotor angular speed with the power coefficient of the wind turbines rotor and is an important factor in maximizing the power generated from the wind. TSR can be written as: (Cao, 2011).…”

Section: Tip Speed Ratio (Tsr)mentioning

confidence: 99%

Comparing the Effect of Rotor Tilt Angle on Performance of Floating Offshore and Fixed Tower Wind Turbines

Wisatesajja¹,

Roynarin²,

Intholo³

2019

JSD

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The development of Floating Offshore Wind Turbines (FOWTs) aims to improve the potential performance of the wind turbine. However, a problem arises due to the angle of tilt from the wind flow and the floating platform, which leads to a vertical misalignment of the turbine axis, thereby reducing the available blade area and lowering the capacity to capture energy. To address this problem, this paper seeks to compare the influence of the rotor tilt angle on wind turbine performance between fixed tower wind turbines and FOWTs. The models used in the experiments have R1235 airfoil blades of diameter 84 cm. The experiment was analyzed using a wind tunnel and mathematical modelling techniques. Measurements were obtained using an angle meter, anemometer and tachometer. Testing involved wind speeds ranging from 2 m/s to 5.5 m/s, and the rotational speeds of the two turbine designs were compared. The study found that the rotational speeds of the FOWTs were lower than those of the fixed tower turbines. Moreover, at tilt angles from 3.5° – 6.1° there was a loss in performance which varied between 22% and 32% at different wind speeds. The tilt angle had a significant effect upon FOWTs due to the angle of attack was continuously changing, thus altering the optimal position of the turbine blades. This changing angle of attack caused the effective area of the rotor blade to change, leading to a reduction in power output at suboptimal angles. The study finally makes recommendations for future studies.

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“…Wind power produced more than 5 % of global electricity in 2018, with 591 GW of global capacity. In 2019, wind installed capacity reached 620 GW [1]. Although people have harnessed the energy generated by the movement of air for hundreds of years, modern turbines reflect significant technological advances over early windmills and turbines from just 100 years ago.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Analysis with Enhanced Resolution of HAWT Blade using CFD

Raveendran

Bala

2021

Walailak J Sci & Tech

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Energy is an important aspect for all countries. Due to the overexploitation of resources, nonrenewable resources, such as fossil fuels, are depleting day by day. This calls for alternative power sources, such as wind energy. Wind energy is a clean and inexhaustible source of energy. One of the ways of harvesting this energy is using wind turbines, which transform the kinetic energy of wind into electrical power output. Wind turbines face many problems, such as low wind hours, design issues, and so on. The main focus of this work is to find the optimum blade angle of turbine blades, in order to produce the maximum power output, even at low wind hours. In this study, CFD analysis is done on a 5 MW wind turbine blade at wind velocities 3, 12.5 and 25 m/s, which are the cut in, rated, and cut out velocities of wind turbines, respectively. The range of angles under consideration varies from 20 to 89 °. A 3D model of the blade is analyzed using ANSYS Fluent 19.0. The optimum blade angle is identified, and the characteristics of the curves of blade angles, with respect to different parameters, are obtained. HIGHLIGHTS Optimum Blade angle for better moment Pressure and velocity Characteristics at various blade angles 5MW HAWT blade moments for wind velocity of 3,12.5 and 25 m/s The maximum moment is obtained at an angle 82 degree at various wind velocities GRAPHICAL ABSTRACT

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Analysis of horizontal axis wind turbine blade using CFD

Cited by 15 publications

References 28 publications

Aerodynamic Performances of Small Scale Horizontal Axis Wind Turbine Blades for Applications in Malaysia

Aerodynamic Performances of Small Scale Horizontal Axis Wind Turbine Blades for Applications in Malaysia

Comparing the Effect of Rotor Tilt Angle on Performance of Floating Offshore and Fixed Tower Wind Turbines

Comprehensive Analysis with Enhanced Resolution of HAWT Blade using CFD

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