IJERT-Aerodynamic Performance Evaluation of a Wind Turbine Blade by Computational and Experimental Method (original) (raw)
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Aerodynamic Performance Evaluation of a Wind Turbine Blade by Computational and Experimental Method
International journal of engineering research and technology, 2014
Lift and Drag forces along with the angle of attack are the important parameters in a wind turbine system. These parameters decide the efficiency of the wind turbine. In this paper an attempt is made to study the Lift and Drag forces in a wind turbine blade at various sections and the effect of angle of attack on these forces. In this paper NACA 4420 airfoil profile is considered for analysis of wind turbine blade. The wind turbine blade is modelled and several sections are created from root to tip. The Lift and Drag forces are calculated at different sections for angle of attack from 0° to 20° for low Reynolds number. The analysis showed that angle of attack of 6° has high Lift/Drag ratio. The CFD analysis is also carried out at various sections of blade at different angle of attack. The pressure and velocity distributions are also plotted. The airfoil NACA 4420 is analyzed based on computational fluid dynamics to identify its suitability for its application on wind turbine blades and good agreement is made between results.
2021
Subhodh S Ghadge, Nandakishor H Murhekar , Amol L Khatode (Mechanical Engg. Dept, SGOI,COE,Belhe,Pune,India) (Mechanical Engg. Dept, Samarth polytechnic,Belhe,Pune,India) (Mechanical Engg. Dept, SGOI,COE,Belhe,Pune,India) Abstract: Background: In this research work an attempt is made to find out forces on Lift and Drag by varying Reynolds number and angle of attack of wind turbine blade. For this purpose airfoil profile of NACA 0012 is considered for doing analysis of wind turbine blade . The forces on Lift and Drag are calculated at various angle of attack varying from 0 to 80 and Reynolds number from 10,000 to 800000 by Computational Fluid Dynamics (CFD) analysis. The validations of the work carried out is done by comparing the results obtained from analysis with that of experimental results which are obtained from the report of Sandia National Laboratories (SNL). It is found that results obtained by present CFD analysis are comparatively very closely matching with results publish...
This paper included in designing and simulating for 2D. It may use two software's called Gambit and FLUENT to generate the data from the fluid flow cases. In this research select two models NACA airfoil NACA4412 and NACA4415. Chose NACA 4412 because lift coefficient is higher than NACA4415. In this study computational flow over an airfoil at different angles of attack (0º, 5º,10º,15º ,20º) using CFD (Computational fluid dynamics) simulation two dimensional airfoil NACA 4412 and NACA4415 CFD models are presented using ANSYS-FLUENT software. For this model Using turbulent viscosity k-epsilon (standard wall function) near the wall and wind velocity 5 m/s Here, NACA 4412 airfoil profile is considered for analysis of wind turbine blade. Geometry of airfoil is created using GAMBIT 2.4.6 and CFD analysis is carried out using FLUENT 6.3.26 at various angles of attack from 0º to 20º. Lift and Drag forces along with the angle of attack are the important parameters in a wind turbine system. The Lift and Drag forces are calculated at different sections for angle of attack from 0o to 20o for low Reynolds number. The analysis showed that the angle of attack of 10o has high Lift/Drag ratio. The airfoil NACA 4412 is analyzed based on computational fluid dynamics to identify its suitability for its application and good agreement is made between the results. Key words: CFD simulation, airfoil, angle of attack.
IJERT-Comparative Aerodynamic Analysis of Wind Turbine Blade Profiles
International Journal of Engineering Research and Technology (IJERT), 2016
https://www.ijert.org/comparative-aerodynamic-analysis-of-wind-turbine-blade-profiles https://www.ijert.org/research/comparative-aerodynamic-analysis-of-wind-turbine-blade-profiles-IJERTV5IS010031.pdf Nowadays renewable energy has become the prime source of clean form of energy. Among various renewable energy sources, wind energy has become one of the key solutions to the prevailing energy crisis. To economically produce the maximum power by using wind turbine the aerodynamic performance of the blade profile must be assessed. The key parameters in analyzing the wind-turbine blade performance are lift and drag coefficient. In order to gain the maximum power from the wind turbine the maximum sliding ratio is desired. In this probe a comparative aerodynamic performance analysis of NREL's S819 and S821 airfoils were performed based on finite volume approach using a computational fluid dynamics (CFD) method. Changing the angle of attack and wind speed different aerodynamic parameters such as the drag coefficient, lift coefficient and pressure distribution over the airfoils were determined computationally. The computational results were verified experimentally by testing the wooden models of the airfoils in a subsonic open circuit suction type wind tunnel. The comparison with the experimental data indicate that the CFD approach applied in this investigation can precisely predict the aerodynamic characteristics of the wind-turbine blades.
Investigation of Aerodynamic Performances of NACA 0015 Wind Turbine Airfoil
Continuous rise of energy demand and need for cleaner environment emphasizes efficient conversion of energy from renewable sources. Wind energy is the most viable sources of renewable energy and it is environmentally friendly alternative energy sources. Energy extraction from wind energy is rapidly competitive to power production from other sources like coal. In this paper, Computational Fluid Dynamics (CFD) is used to predict the aerodynamic efficiency of wind turbine blades. A blade's aerodynamic efficiency is expressed in terms of its lift-to-drag ratio. The design and analysis of blades is one of the critical areas of wind turbine design. In this paper, a review of aerodynamics of the two dimensional NACA 0015 airfoil for vertical axis wind turbine (VAWT) is attempted. The main focus of this investigation is to analyze the flow behavior around the airfoil body and to calculate the performance coefficients at velocity 10.5 m/s and angle of attack from 0° to 20°. Comparisons of the CFD results with numerical predictions from the XFOIL result and NACA report showed a good agreement.
Aerodynamic Analysis on Wind Turbine Aerofoil
International Journal of Engineering & Technology, 2018
The aerofoils of wind turbine blades have crucial influence on aerodynamic efficiency of wind turbine. There are numerous amounts of research being performed on aerofoils of wind turbines. Initially, I have done a brief literature survey on wind turbine aerofoil. This project involves the selection of a suitable aerofoil section for the proposed wind turbine blade. A comprehensive study of the aerofoil behaviour is implemented using 2D modelling. NACA 4412 aerofoil profile is considered for analysis of wind turbine blade. Geometry of this aerofoil is created using GAMBIT and CFD analysis is carried out using ANSYS FLUENT. Lift and Drag forces along with the angle of attack are the important parameters in a wind turbine system. These parameters decide the efficiency of the wind turbine. The lift force and drag force acting on aerofoil were determined with various angles of attacks ranging from 0° to 12° and wind speeds. The coefficient of lift and drag values are calculated for 1×105...
American Scientific Research Journal for Engineering, Technology, and Sciences, 2016
In this research, the performance of two airfoils are compared by using Numerical analysis. There are so many dedicated airfoils to be used in various kinds of wind turbine blades. The lift coefficient and drag coefficient are the key parameters to determine the airfoil performance. The right choice of airfoil gives good performance in wind turbine blade design based on the available wind velocity, Reynold number, blade material. The author wants to compare the performance of 3D model two airfoils (SG 6043 and NACA 4412) for low Reynold number; less than 500,000 [1]. The numerical simulation is carried out by using Ansys-Fluent software. The lift and drag coefficients are compared based on different angle of attack 0o, 5o, 10o at wind velocity 10m/s, rated wind velocity for intended regions. The design chord length is 0.5m and width of the wing is 0.25m. The numerical results are compared with the results of Profili 2.0c software. By doing this simulation, understand their flow natu...
IJERT-A Review on Aerodynamic Analysis of Wind Turbine Blade Using CFD Technique
International Journal of Engineering Research and Technology (IJERT), 2012
https://www.ijert.org/a-review-on-aerodynamic-analysis-of-wind-turbine-blade-using-cfd-technique https://www.ijert.org/research/a-review-on-aerodynamic-analysis-of-wind-turbine-blade-using-cfd-technique-IJERTV1IS10478.pdf The aim of this paper is review for various researches on the aerodynamic analysis of wind turbine blade using Computational Fluid Dynamics (CFD). Wind turbine blades are subjected to various aerodynamic loads; currently much research has concentrated on improving the aerodynamic performance of wind turbine blade through wind tunnel testing and theoretical studies. These efforts are much time consuming and need expensive laboratory resources. However, wind turbine simulation through Computational Fluid Dynamics (CFD) software offers inexpensive solutions to aerodynamic blade analysis problem. In this study the researchers used various CFD codes and got a good result through these codes.
Numerical Analysis of Lift & Drag Performance of NACA0012 Wind Turbine Aerofoil
2017
1PG student, Dr.D.Y. Patil School of Engineering Academy, Ambi-Talegaon, Maharashtra, India 2Professor, Department of Mechanical Engineering, Dr. D.Y.Patil School of Engineering Academy, Ambi, Maharashtra, India ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract Wind energy is consistent source of energy. It doesn’t harm the environment. But it is more important to capture the wind energy. The shape of wind turbine blade plays very important role in capturing wind energy. In this paper, one element of this methodology i.e. aerofoil performance prediction is considered. The aerofoil has tendency to separate the flow at low Reynolds number. This has prompted the investigation of different methods to control the flow separation. In this paper an attempt is made to predict performance of aerofoil by controlling the flow separation with addition of circular dimples on upper surface of aerofo...
With the shortage of fossil fuels, alternative energy has been thrust into the national spotlight as a major necessity in order to keep up with the increasing energy demands of the world. Wind energy has been proven one of the most viable sources of renewable energy. A wind turbine is a rotary device that extracts energy from the wind. Rotor blade is a key element in a wind turbine generator system to convert wind energy into mechanical energy. In this paper rotor blade is made up of single airfoil NACA 0018. The CFD analysis of NACA 0018 airfoil is carried out at various blade angles at 32 m/s wind speed. The analysis showed that blade angle 10º gives optimum power. The pressure and velocity distributions are plotted. These results are compared with wind tunnel experiment values.