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Journal articles on the topic 'Wind turbine blade design and analysis'

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1

Benham, A., K. Thyagarajan, Sylvester J. John, and S. Prakash. "Structural Analysis of a Wind Turbine Blade." Advanced Materials Research 768 (September 2013): 40–46. http://dx.doi.org/10.4028/www.scientific.net/amr.768.40.

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Wind turbines blades of propeller type are made according to various blade profiles such as NACA, LS, and LM. There are many factors for selecting a profile. One significant factor is the chord length, which depend on various values throughout the blade. In this work a NACA 4412 profile was created using DESIGN FOIL software to obtain the coordinates of a wind turbine blade in PRO/E. Aerodynamic analysis was done on the created design. Maximum lift to drag ratio was calculated by varying angle of attack of the blade. To find a suitable composite for wind turbine blade, Modal and Static analysi
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2

Xu, Zhi Qiang, and Jian Huang. "Research on Wind Turbine Blade Loads and Dynamics Factors." Advanced Materials Research 1014 (July 2014): 124–27. http://dx.doi.org/10.4028/www.scientific.net/amr.1014.124.

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Wind turbines consists of three key parts, namely, wind wheels (including blades, hub, etc.), cabin (including gearboxes, motors, controls, etc.) and the tower and Foundation. Wind turbine wheel is the most important part ,which is made up of blades and hubs. Blade has a good aerodynamic shape, which will produce aerodynamic in the airflow rotation, converting wind energy into mechanical energy, and then, driving the generator into electrical energy by gearbox pace. Wind turbine operates in the natural environment, their load wind turbine blades are more complex. Therefore load calculations an
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3

Madi, Madi, Tuswan Tuswan, Ilham Dwi Arirohman, and Abdi Ismail. "Comparative Analysis of Taper and Taperless Blade Design for Ocean Wind Turbines in Ciheras Coastline, West Java." Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan 18, no. 1 (2020): 8–17. http://dx.doi.org/10.14710/kapal.v18i1.32486.

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The blade is the most critical part of turbine design because it is used to convert kinetic to mechanical energy. In general, the blade types used for ocean wind turbines are taper and taperless blades, like those operated at Ciheras Coastline. Previous research has been analyzed the type of airfoil used in designing taper blades for ocean wind turbines using NACA 4412, which was selected as the optimal foil configuration at sea wind speeds of 12 m/s. In this study, the comparison of taper and taperless blade designs using NACA 4412 at a wind speed of 12 m/s is analyzed. The comparative study
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4

Tian, Weijun, Zhen Yang, Qi Zhang, et al. "Bionic Design of Wind Turbine Blade Based on Long-Eared Owl’s Airfoil." Applied Bionics and Biomechanics 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/8504638.

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The main purpose of this paper is to demonstrate a bionic design for the airfoil of wind turbines inspired by the morphology of Long-eared Owl’s wings. Glauert Model was adopted to design the standard blade and the bionic blade, respectively. Numerical analysis method was utilized to study the aerodynamic characteristics of the airfoils as well as the blades. Results show that the bionic airfoil inspired by the airfoil at the 50% aspect ratio of the Long-eared Owl’s wing gives rise to a superior lift coefficient and stalling performance and thus can be beneficial to improving the performance o
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5

Zheng, Jia Hong, and Hao Ran Ma. "Optimization Design of Wind Turbine Blades Based on BLADED." Advanced Materials Research 538-541 (June 2012): 2700–2704. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.2700.

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The optimization of wind turbine blades can increase the generator power and annual output of electricity. Illustrated by the case of 2MW wind turbine, optimizing the blade chord and twist angle by POS algorithm. Modeling by BLADED, analysis the change of lift and drag coefficients, the power coefficient, maximum power of wind turbine, minimum power of wind turbine, wind turbine generating capacity before and after optimization. The results show: the aerodynamic efficiency of optimized blade increased by 4.833 than that before optimization. In the wind speed of 12 m/s (that is lower and normal
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6

Xin, Hua, Chun Hua Zhang, Qing Guo Zhang, and Ping Wang. "Seagull in Wind Turbine Airfoil Blade Design Application Bionic." Applied Mechanics and Materials 380-384 (August 2013): 4336–39. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.4336.

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Wind energy is an inexhaustible, an inexhaustible source of renewable and clean energy. Present due to the energy crisis and environmental protection and other issues, the use of wind more and more world attention. The wind turbine is the best form of wind energy conversion. Wind turbine wind turbine blades to capture wind energy is the core component of the blade in a natural environment to run directly in contact with air, with seagulls wings generate lift conditions are similar, so the gull wings airfoil and excellent conformation, with wind turbine blade design designed by combining the bi
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7

Bae, Sung-Youl, and Yun-Hae Kim. "Structural design and analysis of large wind turbine blade." Modern Physics Letters B 33, no. 14n15 (2019): 1940032. http://dx.doi.org/10.1142/s0217984919400323.

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This paper presents a new design procedure for large wind turbine blades, which can be used in various case studies. The structural design of 2MW CFRP blade was performed using a verified 2MW GFRP blade model. The structural integrity assessment of the CFRP model demonstrated that the design criteria for tip deformation, buckling failure, and laminate failure in normal wind turbine operating conditions were met. The existing aero-elastic analysis code was not used to estimate the blade load, but the blade’s surface pressure was calculated using CFD. The conventional load analysis code necessit
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8

Tian, De, Shuo Ming Dai, Si Liu, and Ning Bo Wang. "Analysis of Aerodynamic Performance for Wind Turbine Based on Amended Calculation of BEM Theory." Advanced Materials Research 608-609 (December 2012): 775–80. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.775.

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Effects of tip losses, hub losses, amended attack angle, and amended thrust coefficient are taken into consideration to analyze aerodynamic performance of wind turbine blades based on the blade element momentum (BEM) theory. Based on amended calculation of BEM theory, a program code is developed by software named Matlab. Using a 1500kW wind turbine as an example, aerodynamic information, performance coefficients and blade load distributions are calculated. Compared with the well-known international wind power design software called Garrad Hassan (GH) Bladed, the results have good consistency,
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9

Gong, Jie Kai, Wen Lei Sun, and An Wu. "1.5MW Wind Turbine Structural Dynamic Analysis." Key Engineering Materials 522 (August 2012): 323–26. http://dx.doi.org/10.4028/www.scientific.net/kem.522.323.

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In recent decades, the rapidly development of wind energy in China and the increasing of size and complexity of wind turbine have requested the improvement in wind turbine systematic design technology. A reasonable systematic dynamic model is an important part for systematic design of MW-class wind turbine. In structural dynamic model, the flexibility of blade and tower is represented by presumed mode shapes. In this paper, based on presumed mode shape method, the structural dynamic equations of wind turbine were constructed. Along with the wind field model, the wind turbine aeroelastic system
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10

Cheng, Chao Yuan, Dong Hui Song, and Gwo Chung Tsai. "CFD Analysis and Blade Optimization of a Small Horizontal Axis Wind Turbine." Advanced Materials Research 591-593 (November 2012): 231–35. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.231.

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This paper aims to do blade design of a small horizontal axis wind turbine and perform wind tunnel test to conform its efficiency. In this research Bladecalculator, Pro/E and ANSYS/CFX are used to find the relationship between the blade rotating speed with torque. The analytical results of wind turbine completely match with that of test data. Comparison with data of generator, new design blade gets more power. The power of new design blades is about ten times as the original blades.
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11

Choi, Dong-Kuk, Bong-Do Pyeon, Soo-Yong Lee, Hak-Gu Lee, and Jae-Sung Bae. "Structural Design, Analysis, and Testing of a 10 kW Fabric-Covered Wind Turbine Blade." Energies 13, no. 12 (2020): 3276. http://dx.doi.org/10.3390/en13123276.

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Reducing the weight of a wind turbine blade is a major issue. Wind turbines have become larger in size to increase power generating efficiency. The blade has also grown in length to take more wind energy. A fabric-based wind turbine blade, introduced by General Electric Co., reduced the blade weight. In this study, a small fabric-covered blade for a 10 kW wind turbine was developed to verify structural ability. The blade was designed on the cross-section using variational asymptotic beam sectional analysis (VABS), structural analysis was carried out using MSC.Nastran for the design loads. A mo
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12

Chen, Guang Hua, De Tian, and Ying Deng. "Aerodynamic and Structural Design of Composite Wind Turbine Blades." Applied Mechanics and Materials 268-270 (December 2012): 1294–98. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.1294.

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With 3MW composite blade wind turbine blade as an example, according to the momentum blade element theory, optimized the design of aerodynamic shape, established the Three-dimensional model of blade through coordinate conversion, and made the stress check of structure and modal analysis using the finite element method, and more detailed description of the design methods and techniques of large composite wind turbine blades
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13

Zhang, Jian Jie, Wen Lei Sun, and Wei Yi Wan. "Kinetic Analysis of Wind Turbine Blades." Key Engineering Materials 579-580 (September 2013): 362–67. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.362.

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This paper using ANSYS software such as wind turbine blades and other key components of the kinetic analysis and research, the kinetic analysis method and finite element analysis software combine to validate the experimental data is reasonable. Specific contents are: wind turbine blade dynamics analysis. The wind turbine blades as slender cantilever, so you can use the ANSYS program flexible dynamic analysis modules. The module is used to calculate the alternating loads flexible body structural response, namely due to the coupling effect of making wind turbine blades load acceleration, deforma
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14

Finnegan, William, Priya Dasan Keeryadath, Rónán Ó Coistealbha, Tomas Flanagan, Michael Flanagan, and Jamie Goggins. "Development of a numerical model of a novel leading edge protection component for wind turbine blades." Wind Energy Science 5, no. 4 (2020): 1567–77. http://dx.doi.org/10.5194/wes-5-1567-2020.

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Abstract. As the world shifts to using renewable sources of energy, wind energy has been established as one of the leading forms of renewable energy. However, as wind turbines get increasingly larger, new challenges within the design, manufacture and operation of the turbine are presented. One such challenge is leading edge erosion on wind turbine blades. With larger wind turbine blades, tip speeds begin to reach over 300 km h−1. As water droplets impact along the leading edge of the blade, rain erosion begins to occur, increasing maintenance costs and reducing the design life of the blade. In
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15

Tarfaoui, M., H. Khadimallah, Abdellatif Imad, and J. Y. Pradillon. "Design and Finite Element Modal Analysis of 48m Composite Wind Turbine Blade." Applied Mechanics and Materials 146 (December 2011): 170–84. http://dx.doi.org/10.4028/www.scientific.net/amm.146.170.

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We currently notice a substantial growth in the wind energy sector worldwide. This growth is expected to be even faster in the coming years. This means that a massive number of wind turbine blades will be produced in the forthcoming years. There is a large potential for materials savings in these blades. The analysis of designed blade is done in dynamic loading. Five types of spars cross-section are taken in this work. The blade and spar are of composite material. The Finite element modal analysis of designed blade is done in ABAQUS. The scope of the present work is to investigate the structur
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16

Zhu, Shi Fan, and Ibrohim Rustamov. "Structural Design and Finite Element Analysis of Composite Wind Turbine Blade." Key Engineering Materials 525-526 (November 2012): 225–28. http://dx.doi.org/10.4028/www.scientific.net/kem.525-526.225.

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This paper presents structural studies of a medium scale composite wind turbine blade construction made of epoxy glass fiber for a 750kW rated power stall regulated horizontal axis wind turbine system. The complex geometry of the blade with a skin-spar foam sandwich structure was generated by utilizing commercial code ANSYS finite element package. Dimensions of twist, chord and thickness were developed by computer program. NREL S-series airfoils with different chord thickness are used along current blade cross-sections. The current design method uses blade element momentum (BEM) theory to comp
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17

Yi, Lee Zhou, and Choe-Yung Teoh. "Modal Analysis of Vertical Wind Turbine Blade." MATEC Web of Conferences 217 (2018): 01003. http://dx.doi.org/10.1051/matecconf/201821701003.

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Wind turbines cannot simply be installed in Malaysia due to low wind speed condition. the project has analyzed the existing wind turbine blade (Aeolos-V 1k) design based on modal properties using computational approach (ANSYS Workbench) and redesign it. the modal analysis is simulated to observe natural frequency and corresponding mode shaped of the system under free vibration. the flow induced vibration can cause blade failure due to resonance or fatigue. Fluid Structural Interaction (FSI) ANSYS is used to the determined the interaction between the wind flow and the blade. Harmonic Response A
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18

Zhao, Jie, Xiong Wei Liu, Lin Wang, and Xin Zi Tang. "Design Attack Angle Analysis for Fixed-Pitch Variable-Speed Wind Turbine." Advanced Materials Research 512-515 (May 2012): 608–12. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.608.

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The purpose of this paper is to find the optimum design attack angle for fixed-pitch variable-speed wind turbine blade design, given the base-line wind turbine and the blade airfoil. Aerodynamic characteristics, i.e. lift and drag coefficients and lift to drag ratio, of the wind turbine, are analyzed. Two design attack angles along with the base-line attack angle (with maximum lift to drag ratio) are selected for the wind turbine blade design exercise. Blade design outcomes are analyzed and compared along with load performance and power performance. This paper is possibly the first attempt to
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19

Kulsinskas, Andrius, Petar Durdevic, and Daniel Ortiz-Arroyo. "Internal Wind Turbine Blade Inspections Using UAVs: Analysis and Design Issues." Energies 14, no. 2 (2021): 294. http://dx.doi.org/10.3390/en14020294.

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Interior and exterior wind turbine blade inspections are necessary to extend the lifetime of wind turbine generators. The use of unmanned vehicles is an alternative to exterior wind turbine blade inspections performed by technicians that require the use of cranes and ropes. Interior wind turbine blade inspections are even more challenging due to the confined spaces, lack of illumination, and the presence of potentially harmful internal structural components. Additionally, the cost of manned interior wind turbine blade inspections is a major limiting factor. This paper analyses all aspects of t
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20

Kulsinskas, Andrius, Petar Durdevic, and Daniel Ortiz-Arroyo. "Internal Wind Turbine Blade Inspections Using UAVs: Analysis and Design Issues." Energies 14, no. 2 (2021): 294. http://dx.doi.org/10.3390/en14020294.

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Interior and exterior wind turbine blade inspections are necessary to extend the lifetime of wind turbine generators. The use of unmanned vehicles is an alternative to exterior wind turbine blade inspections performed by technicians that require the use of cranes and ropes. Interior wind turbine blade inspections are even more challenging due to the confined spaces, lack of illumination, and the presence of potentially harmful internal structural components. Additionally, the cost of manned interior wind turbine blade inspections is a major limiting factor. This paper analyses all aspects of t
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21

Pan, Ping Ping, Chang Zheng Chen, Shen Bo Yu, and Qiang Meng. "Analysis of Dynamic Characteristics of 1.5 MW Wind Turbine Tower." Applied Mechanics and Materials 313-314 (March 2013): 793–96. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.793.

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The wind turbine tower is to bear wind load and work load which is brought by the rotating blades during operation. Therefore, analysis of dynamic characteristics of wind turbine tower is a complicated task in the wind turbine reliability design. The dynamic characteristic of wind turbine tower plays an important role in its vibration control. This paper presents fluid-structure coupled dynamics equations accounting for the blade wheel load and wind load applying on the tower. By the model analysis, a feasible method for evaluating the dynamic characteristics of wind turbine tower under the wi
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22

Qian, Xiaohang, Zhiteng Gao, Zhiyong Zhang, and Tongguang Wang. "Geometric nonlinear dynamic response of wind turbines with different power performance." E3S Web of Conferences 271 (2021): 01005. http://dx.doi.org/10.1051/e3sconf/202127101005.

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As the size of wind turbine blades increases, the influence of geometric nonlinearity on aerodynamic, structural and design of blades becomes more and more serious. In this work, the efficient aero-elastic calculation of large flexible blades is studied. In order to solve the problem of efficient aeroelastic caculation of large flexible blades, this work applied the geometrically exact beam theory based on Legendre spectral finite element and coupled with the blade element momentum theory to establish the aero-elastic analysis model of large flexible blades. This model can efficiently calculat
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23

Sun, Wen Lei, Guo Yu Hu, and Hong Jiang. "Blade Reverse Design of Large Wind Turbine." Key Engineering Materials 522 (August 2012): 503–6. http://dx.doi.org/10.4028/www.scientific.net/kem.522.503.

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Blade is one of key parts in wind turbine. Its shape design and airfoil selection directly affects the performance of wind turbine. This paper presented reverse redesign method of blade of large wind turbine and developed a blade airfoil automatically generating system. The redesign of blade is achieved through such processes as reverse measurement, reverse CAD modeling and blade reverse model analysis as well as determining the formula of blade section parameters. The blade airfoil automatically generating system has been applied.
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24

Das, Swagata, Neeraj Karnik, and Surya Santoso. "Time-Domain Modeling of Tower Shadow and Wind Shear in Wind Turbines." ISRN Renewable Energy 2011 (October 23, 2011): 1–11. http://dx.doi.org/10.5402/2011/890582.

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Tower shadow and wind shear contribute to periodic fluctuations in electrical power output of a wind turbine generator. The frequency of the periodic fluctuations is times the blade rotational frequency , where is the number of blades. For three-bladed wind turbines, this inherent characteristic is known as the effect. In a weak-power system, it results in voltage fluctuation or flicker at the point of common coupling of the wind turbine to the grid. The phenomenon is important to model so as to evaluate the flicker magnitude at the design level. Hence, the paper aims to develop a detailed tim
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25

Clausen, P. D., P. Freere, P. Peterson, S. V. R. Wilson, and D. H. Wood. "The Shape and Performance of Hand-Carved Small Wind Turbine Blades." Wind Engineering 33, no. 3 (2009): 299–304. http://dx.doi.org/10.1260/0309-524x.33.3.299.

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This paper describes measurements of the shape of a 900 mm long, hand-carved timber blade for a 500 W three-bladed horizontal axis wind turbine. Four blades were hand-carved in Nepal by reference to a master blade cut in Australia on a numerically controlled milling machine. A high definition three-dimensional scanner was used to determine the surface of one hand-carved blade as a series of profiles at 50 mm intervals along the blade's length. A surface model generated from these profiles was compared to the designed blade shape in terms of the three fundamental blade design parameters: chord,
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26

Mujahid, Muhammad, Abdur Rafai, Muhammad Imran, Mustansar Hayat Saggu, and Noor Rahman. "Design Optimization and Analysis of Rotor Blade for Horizontal-Axis Wind Turbine Using Q-Blade Software." Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences 64, no. 1 (2021): 65–75. http://dx.doi.org/10.52763/pjsir.phys.sci.64.1.2021.65.75.

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 Wind energy plays a tremendous role in energy power sector in terms of wind turbine. Engineers and scientists are trying to improve the wind turbine design in order to get the maximum power efficiency from the wind, which is one of the most cheap and common renewable resource in nature. The objective of this study was to design a horizontal wind turbine rotor blade for a site of known wind data in order to extract the maximum power efficiency from the wind by using blade element theory analysis and Q-Blade simulation. Eight different aerofoils of different thicknesses from two NACA fami
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27

Zhou, Qian Qian, He Sun, Chun Bao Liu, Yang Wang, and Xiao Guang Liu. "Aerodynamic Design and Modal Analysis on Wind Turbine Blade Based on CAD/CAE." Advanced Materials Research 952 (May 2014): 181–85. http://dx.doi.org/10.4028/www.scientific.net/amr.952.181.

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Wind turbine blade is an important component to capture wind energy and converse energy. Basing on Wilson optimization method and engineering pratice, 2MW wind turbine blade’s aerodynamic profile is designed. Meanwhile, in order to avoid the resonance damage, top 10 rank modal frequencies and displacement gradient distribution contours are obtained through modal analysis. The results show that blade’s natural frequency does not coincide with the external excitation frequency, which avoids the resonance damage. Blade’s major vibration forms are waving and shimmy, requiring the ability of excell
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28

Navadeh, Navid, Ivan Goroshko, Yaroslav Zhuk, Farnoosh Etminan Moghadam, and Arash Soleiman Fallah. "Finite Element Analysis of Wind Turbine Blade Vibrations." Vibration 4, no. 2 (2021): 310–22. http://dx.doi.org/10.3390/vibration4020020.

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The article is devoted to the practical problem of computer simulation of the dynamic behaviour of horizontal axis wind turbine composite rotor blades. This type of wind turbine is the dominant design in modern wind farms, and as such its dynamics and strength characteristics should be carefully studied. For this purpose, in this paper the mechanical model of a rotor blade with a composite skin possessing a stiffener was developed and implemented as a finite element model in ABAQUS. On the basis of this computer model, modal analysis of turbine blade vibrations was performed and benchmark case
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29

Etuk, E. M., A. E. Ikpe, and U. A. Adoh. "Design and analysis of displacement models for modular horizontal wind turbine blade structure." Nigerian Journal of Technology 39, no. 1 (2020): 121–30. http://dx.doi.org/10.4314/njt.v39i1.13.

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This study examined the normal, radial, axial and tangential loading cycles undergone by wind turbine rotor blades and their effects on the displacement of the blade structure. The rotor blade was modelled using Q Blade finite element sub module, which evaluated the loading cycles in terms of the forces induced on the blade at various frequencies through several complete revolution cycles (360o each cycle). At frequencies of 5 HZ, 23 Hz, 60 Hz, 124 Hz and 200 Hz, maximum strain deformation of 0.004, 0.04, 0.08, 0.14 and 0.24 were obtained, and geometry of the deformed blades were characterized
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30

Stępień, Małgorzata, Michał Kulak, and Krzysztof Jóźwik. "“Fast Track” Analysis of Small Wind Turbine Blade Performance." Energies 13, no. 21 (2020): 5767. http://dx.doi.org/10.3390/en13215767.

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Small wind turbines (SWTs) can be significantly sensitive to variances in the blade geometry shape when their operation in relatively low ranges of Reynolds numbers is considered. An SWT case study, where an existing wind turbine prototype was equipped with a redesigned blade set, to increase its aerodynamic efficiency, is presented. The geometry modification process was targeted at maximizing the turbine power coefficient in the presumed point of low Reynolds operation. The applied design and analysis methods included practical implementation of previously established “Fast Track” procedure f
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31

Gao, Wei, Chun Li, Quan Liu, and Yu Chen. "The Design and Prestressed Modal Analysis for Megawatt-Class Wind Turbine Rotor." Applied Mechanics and Materials 226-228 (November 2012): 295–98. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.295.

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The blade is an important component of the wind turbine, which is essential to proper blade design. This paper summarizes the process of the blade design, the selection of the design parameters, and the design of megawatt-scale blades. The finite element method was applied on the model generated in 3D graphics software. After selecting the material parameters of the blade, the modal analyses under prestresses were conducted so as to determine the modal shapes, frequency, maximum deflection and maximum stress at different orders of vibration. Thus the results were compared with those of modal a
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32

Hua, Xin, Chunhua Zhang, Jinda Wei, Xingjun Hu, and Hongliang Wei. "Wind turbine bionic blade design and performance analysis." Journal of Visual Communication and Image Representation 60 (April 2019): 258–65. http://dx.doi.org/10.1016/j.jvcir.2019.01.037.

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33

Liu, Quan, and Zhen Zhen. "Design of the Blades of Small Horizontal Axis Wind Turbines." Applied Mechanics and Materials 741 (March 2015): 23–27. http://dx.doi.org/10.4028/www.scientific.net/amm.741.23.

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According to the existing wind turbine blade design of classical theory to design the shapes of blades, choosing the standardized airfoils, using the parameters of each section of the blade to build 3D modeling by Pro/E software, using ANSYS finite element analysis software to determine the rationality of the design. In order to manufacture the blade light weight, high strength, the paper also studied manufacturing process of blades.
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34

Wang, Xin, Yu Xiu Xu, and Chuang Ma. "Large Wind Turbine Blade Layer Design and Dynamics Characteristics Analysis." Applied Mechanics and Materials 29-32 (August 2010): 1615–21. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.1615.

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A 2.5MW wind turbine blade is modeled. The maximum static stress obtaining by the finite element method is compared with the theoretical analysis’s. The results acquired by both of them are same with each other, which validate the rationality of the finite element computational modeling. We find out the weakness regions of the blade by modal analysis on blade. This parper studies the effects of the axial of the fibrous layer, the proportion of axial fiber and the number of layers on the blade dynamic characteristic, respectively, and designs an optimization scheme to improve the blade dynamic
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35

Roy, Lalit, Kellis Kincaid, Roohany Mahmud, and David W. MacPhee. "Double-Multiple Streamtube Analysis of a Flexible Vertical Axis Wind Turbine." Fluids 6, no. 3 (2021): 118. http://dx.doi.org/10.3390/fluids6030118.

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Vertical-axis wind turbines (VAWTs) have drawn increased attention for off-grid and off-shore power generation due to inherent advantages over the more popular horizontal-axis wind turbines (HAWTs). Among these advantages are generator locale, omni-directionality and simplistic design. However, one major disadvantage is lower efficiency, which can be alleviated through blade pitching. Since each blade must transit both up- and down-stream each revolution, VAWT blade pitching techniques are not yet commonplace due to increased complexity and cost. Utilizing passively-morphing flexible blades ca
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36

Lipian, Michal, Pawel Czapski, and Damian Obidowski. "Fluid–Structure Interaction Numerical Analysis of a Small, Urban Wind Turbine Blade." Energies 13, no. 7 (2020): 1832. http://dx.doi.org/10.3390/en13071832.

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While the vast majority of the wind energy market is dominated by megawatt-size wind turbines, the increasing importance of distributed electricity generation gives way to small, personal-size installations. Due to their situation at relatively low heights and above-ground levels, they are forced to operate in a low energy-density environment, hence the important role of rotor optimization and flow studies. In addition, the small wind turbine operation close to human habitats emphasizes the need to ensure the maximum reliability of the system. The present article summarizes a case study of a s
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37

Zheng, Yu Qiao, Rong Zhen Zhao, and Hong Liu. "Finite Element Modal Analysis of Large-Scale Composite Wind Turbine Blade." Advanced Materials Research 694-697 (May 2013): 453–57. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.453.

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This paper presents a dynamic response analysis of the blade of horizontal axis wind turbines using finite element method. The blade is treated as a thin-walled beam based on the classical lamination theory, and accounts for arbitrary material layup and non-linear anisotropic fibre-reinforced composites. Applying the proposed method,A 29 m rotor blade, previously reported in specialized literature, was chosen as a case study the dynamic behaviour built in a FEM software tool. It is developed to predict natural frequencies and corresponding vibration modes in rotating blade in-plane and out-of-
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Chen, Xiao, Li Qiu, and Qiang Cen. "Deformation properties of self-adapting wind turbine blades numerical approach and optimization." Thermal Science 23, no. 4 (2019): 2397–402. http://dx.doi.org/10.2298/tsci1904397c.

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All wind-driven generators need to be equipped with brakes to ensure operational control and safety. Many methods are available to avoid over-speed of the blower. This paper establishes a mechanics model to investigate each point on turbine blades, which are such designed that they would change shape in high winds to reduce the frontal area through adaptive and flexible deformation. In this way, high wind speeds will cause deformation of the blades and decrease of the rotational speed, as a result the turbine slows down. A numerical analysis of the fluid in the fan housing and a force analysis
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Guan, Xin, Hua Dong Wang, Zhi Li Sun, Xiao Guo Bi, and Xu Dong Liu. "Variation of Aerodynamic Load Engineering Analysis during Wind Turbine Run." Applied Mechanics and Materials 291-294 (February 2013): 501–6. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.501.

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In order to improve design reliability of wind turbine, it is needed that calculating method of aerodynamic load during wind turbine run. In paper from the angle of the project, NACA special airfoil of wind turbine is analyzed. Combined with thin-theory, airfoil angle of attack variation is deduced, meanwhile wind turbine actual force is calculated in each blade location point when blade of wind turbine is running based on wind shear theory and tower shadow effect. According to actual condition calculation method is engineering amplified, aerodynamic load calculation method of wind turbine bla
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Liu, Ming Xue, Ye Fa Hu, Ru Hao Dong, Shi Min Peng, and Hua Chun Wu. "Load Analysis and Structure Design of Small-Scale Maglev Wind Turbine." Applied Mechanics and Materials 624 (August 2014): 308–14. http://dx.doi.org/10.4028/www.scientific.net/amm.624.308.

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To effectively reduce friction torque and start-up wind speed, magnetic bearing was applied to the small-scale wind turbine. Load analysis is the primary task of the design for magnetic bearing in wind turbine. Based on a typical blade model, the aerodynamic performance of the impeller was simulated using Computational Fluid Dynamics (CFD) method. The characteristics and differences of the impeller’s aerodynamic performance under different wind speeds were analyzed and the aerodynamic loads were calculated as well. Moreover, the bearing capacity of magnetic bearing was calculated according to
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Zhu, Guo Quan, Guo Ping Chen, Lang Li, and Lu Bing Dai. "Analysis and Study on Centrifugal Rotating Speed Control of Small Wind Turbine Blade." Advanced Materials Research 347-353 (October 2011): 1922–25. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1922.

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Wind power is a clean renewable energy. It plays an important role in changing environmental condition and economic development. Wind turbine is a wind energy capture control. Rotating speed control of wind turbine blade is one key problem of wind power generator technology. Through analyzing the theory of centrifugal rotating speed control, this paper carried out the experiments on centrifugal rotating speed control device of small wind turbine blade, and analyzes the effects of different wind speeds on rotating angle of wind turbine blade. A method of rotating speed control has been mentione
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Zhou, Fang, Hassan Mahfuz, Gabriel M. Alsenas, and Howard P. Hanson. "Static and Fatigue Analysis of Composite Turbine Blades Under Random Ocean Current Loading." Marine Technology Society Journal 47, no. 2 (2013): 59–69. http://dx.doi.org/10.4031/mtsj.47.2.6.

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AbstractThe objective of this paper is to investigate how U.S. National Renewable Energy Laboratory (NREL)‐designed modeling tools commonly used for wind turbine blade design and analysis can be applied to the design of ocean current turbines (OCT). Design, static analysis, and fatigue life predictions of a horizontal-axis, ocean current turbine composite blade were investigated using NREL’s PreCom, BModes, AeroDyn, FAST with seawater conditions. PreComp was used to compute section properties of this OCT blade. BModes calculated mode shapes and frequencies of the blade. Loading on a turbine bl
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Tang, Wen Xian, Cheng Cheng, Yun Di Cai, and Fei Wang. "Study on Wind Turbine Blade Design Method and Modeling Technology." Applied Mechanics and Materials 88-89 (August 2011): 549–53. http://dx.doi.org/10.4028/www.scientific.net/amm.88-89.549.

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According to the design procedure of wind turbine blade, a design method that can make CAD software joint used was brought up. Wilson method was used to design and calculate the main data of blade. On this basis, the three-dimensional solid model of wind turbine blade could get by using and playing the function of different CAD software. This study provided a reference for the design of wind turbine blade and other similar complicated structures, which settles the basis for the further analysis of blade.
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MERAD, Asmae BOUANANI, and Mama BOUCHAOUR. "MODELING AND SIMULATION OF THE VERTICAL AXIS WIND TURBINE BY QBLADE SOFTWARE." Algerian Journal of Renewable Energy and Sustainable Development 2, no. 02 (2020): 181–88. http://dx.doi.org/10.46657/ajresd.2020.2.2.11.

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The use of wind energy has no harmful effects on the environment. This makes it a clean energy that is a real alternative to the problem of nuclear waste management and greenhouse gas emissions. Vertical axis wind turbines have prospective advantages in the field of domestic applications, because they have proven effectual in urban areas where wind flow conditions are intermittent, omnidirectional, unsteady and turbulent. The wind cannot ensure a regular energy supply without optimising the aerodynamics of the blades. This article presents a reminder about wind energy and wind turbines, especi
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Loss, Theresa, and Alexander Bergmann. "Vibration-Based Fingerprint Algorithm for Structural Health Monitoring of Wind Turbine Blades." Applied Sciences 11, no. 9 (2021): 4294. http://dx.doi.org/10.3390/app11094294.

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Monitoring the structural health of wind turbine blades is essential to increase energy capture and operational safety of turbines, and therewith enhance competitiveness of wind energy. With the current trends of designing blades ever longer, detailed knowledge of the vibrational characteristics at any point along the blade is desirable. In our approach, we monitor vibrations during operation of the turbine by wirelessly measuring accelerations on the outside of the blades. We propose an algorithm to extract so-called vibration-based fingerprints from those measurements, i.e., dominant vibrati
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Widiyanto, Syam, Sasongko Pramonohadi, and Mohammad Kholid Ridwan. "Performance Analysis of Small Horizontal Axis Wind Turbine with Airfoil NACA 4412." International Journal of Science, Technology & Management 2, no. 1 (2021): 347–57. http://dx.doi.org/10.46729/ijstm.v2i1.165.

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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
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Zhu, Jie, Xin Cai, Pan Pan, and Rong Rong Gu. "Static and Dynamic Characteristics Study of Wind Turbine Blade." Advanced Materials Research 383-390 (November 2011): 1895–900. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.1895.

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Structural analysis of wind turbine blade is a necessary part in the process of blade design. Based on the ANSYS software, the stress and strain distribution analysis of a kind of 1500kW horizontal axis wind turbine blade is carried out at the action of ultimate flapwise loads, the vibration mode shapes of this blade are also analyzed in this paper, thus providing some reference value for the larger-scale wind turbine blade on structural design.
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Zhu, Jie, Xin Cai, Pan Pan, and Rong Rong Gu. "Static and Dynamic Characteristics Study of Wind Turbine Blade." Advanced Materials Research 433-440 (January 2012): 438–43. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.438.

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Structural analysis of wind turbine blade is a necessary part in the process of blade design. Based on the ANSYS software, the stress and strain distribution analysis of a kind of 1500kW horizontal axis wind turbine blade is carried out at the action of ultimate flapwise loads, the vibration mode shapes of this blade are also analyzed in this paper, thus providing some reference value for the larger-scale wind turbine blade on structural design.
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Zhao, Li Hua, Ming Liu, Tie Lv, and Xiao Qun Mei. "Numerical Simulation of Vertical Axis Wind Turbine Blade Airfoil Performance." Applied Mechanics and Materials 529 (June 2014): 173–77. http://dx.doi.org/10.4028/www.scientific.net/amm.529.173.

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Research of blade airfoil aerodynamic characteristics is an important foundation for the vertical axis wind turbine aerodynamic design and performance analysis. CFD simulation software has been applied in this paper. Representative lift-type vertical axis wind turbine airfoil NACA0014, NACA2414, NACA4414, NACA6414, NACA8414 's aerodynamic simulation have been studied. Camber airfoil relative with the change in to the flow velocity is analyzed. At different angles of attack effect on the aerodynamic performance of wind turbines, variation of parameters for airfoil aerodynamic had been analyzed.
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Lv, Jinlei, Wenxian Yang, Haiyang Zhang, Daxiong Liao, Zebin Ren, and Qin Chen. "A Feasibility Study to Reduce Infrasound Emissions from Existing Wind Turbine Blades Using a Biomimetic Technique." Energies 14, no. 16 (2021): 4923. http://dx.doi.org/10.3390/en14164923.

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Infrasound, i.e., low-frequency noise in the frequency range of 10–200 Hz, produced by rotating wind turbine blades has become a matter of concern because it is harmful to human health. Today, with the rapid increase of wind turbine size, this kind of noise is more worrying than ever. Although much effort has been made to design quiet wind turbine blades, today there is still a lack of effective techniques to reduce infrasound emissions from existing blades. To fill this gap in technology, a biomimetic technique that can be readily applied to reduce infrasound emissions of existing wind turbin
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