Abstract
A thorough understanding of the various parameters that affect the vertical axis wind turbine performance and lifespan will make design this model of turbine not difficult task. This article presents a study of the blade profile effect on the aerodynamic performance of a vertical axis wind turbineDarrieus H-rotor. A complete series of simulations based on complete unstable URANS calculations are performed for a three-blade Darrieus wind turbine. Fluent’s software is used for the numerical solution. The aerofoils of blade chosen for testing were NACA 0012, 0015, 0018, 0021 and -60 pitch angle is taken as the reference case for comparison. In order to quantify the influence of the profile of the blade on the performance, the characteristics of the flow field around the rotor of the different configurations are studied. For different values of the tip speed ratio, dynamic quantities, such as torque and rotor power, are presented and analyzed. Also in this investigation of the flow flied, two parameters are carefully investigated: mesh resolution and time step size. In the analysis, it appears that these parameters affect result accuracy. Finally, the numerical result shows that the variation of blade profile directly affected directly the power production.
Highlights
Electricity can be generated from the wind by wind turbines
Which are broadly classified as horizontal axis wind turbines (HAWT) and vertical axis wind turbines (VAWT)
Two dimensional simulations are carried out to estimate the aerodynamic performance of H- rotors with different airfoil shapes NACA 0012, 0015, 0018, 0021, 0024 because they are best for the vertical axis wind turbine due to their aerodynamic symmetry [2]
Summary
Electricity can be generated from the wind by wind turbines. Which are broadly classified as horizontal axis wind turbines (HAWT) and vertical axis wind turbines (VAWT). [9] studied the influence of the blade chord on the aerodynamics and performance of vertical axis wind turbines with experimental and computational fluid dynamics methods. Castelli M. et al [10] performed numerical simulations using RANS model for VAWT with a three, four and five-bladed rotor He has concluded a decrease of the torque during the revolution of a vertical-axis wind turbine (VAWT) by increasing the blade number. This work concentrates in particular to study the parameter which affects the performance of these turbines, the airfoil of blade for to find the best configuration of these turbines For this purpose, two dimensional simulations are carried out to estimate the aerodynamic performance of H- rotors with different airfoil shapes NACA 0012, 0015, 0018, 0021, 0024 because they are best for the vertical axis wind turbine due to their aerodynamic symmetry [2]. This geometry of the digitized rotor was used in order to generate fluid volumes which constitute the various fields of calculation
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
