Journal ArticleDOI
Influence of operating conditions on unsteady wind performance of vertical axis wind turbines operating within a fluctuating free-stream: A numerical study
TLDR
In this article, a numerical method is presented to investigate the influence of operating conditions on Vertical Axis Wind Turbine (VAWT) of NACA00XX symmetric airfoils with 12% and 22% thickness in unsteady wind condition.About:
This article is published in Journal of Wind Engineering and Industrial Aerodynamics.The article was published on 2014-12-01. It has received 59 citations till now. The article focuses on the topics: Vertical axis wind turbine & Tip-speed ratio.read more
Citations
More filters
Journal ArticleDOI
A review on small scale wind turbines
TL;DR: In this paper, the performance, blade design, control and manufacturing of horizontal axis and vertical axis wind turbines are reviewed based on experimental and numerical studies and lessons learnt from various studies/countries on actual installation of small wind turbines were presented.
Journal ArticleDOI
Unsteady aerodynamics simulation of a full-scale horizontal axis wind turbine using CFD methodology
TL;DR: In this paper, the unsteady aerodynamic configuration of a full-scale HAWT is simulated with consideration of wind shear, tower shadow and yaw motion, and the simulation results show that each blade reaches its maximum and minimum aerodynamic loads almost at the same time during the rotation circle.
Journal ArticleDOI
Experimental and numerical study of turbulence effect on aerodynamic performance of a small-scale vertical axis wind turbine
TL;DR: In this article, an experimental method is presented for a deeper understanding of unsteady rotor aerodynamics under turbulent flow operating conditions, and a systematic analysis of torque and power coefficients, including their variations at uniform flow, is also presented to predict the power performance.
Journal ArticleDOI
CFD analysis of the angle of attack for a vertical axis wind turbine blade
TL;DR: The paper proposes a fast and accurate method for the calculation of the constantly changing Angle of Attack (AOA) based on the velocity flow field data at two reference points upstream the turbine blades without the need for extensive post-processing for efficient turbine aerodynamic analysis and optimisation.
Journal ArticleDOI
Novel investigation of the different Omni-direction-guide-vane angles effects on the urban vertical axis wind turbine output power via three-dimensional numerical simulation
Behzad Shahizare,N. Nik-Ghazali,Wen Tong Chong,Seyedsaeed Tabatabaeikia,Nima Izadyar,Alireza Esmaeilzadeh +5 more
TL;DR: In this article, the effects of different Omni-direction-guide-vane (ODGV) angles on the performance of the vertical axis wind turbine (VAWT) have been simulated via threedimensional (3D) computational fluid dynamics (CFD).
References
More filters
Book
Wind Energy Handbook
TL;DR: The Wind Energy Handbook as discussed by the authors provides an overview of wind turbine technology and wind farm design and development, as well as a survey of alternative machine architectures and an introduction to the design of the key components.
ReportDOI
Aerodynamic characteristics of seven symmetrical airfoil sections through 180-degree angle of attack for use in aerodynamic analysis of vertical axis wind turbines
R E Sheldahl,P C Klimas +1 more
TL;DR: In this article, a wind tunnel test series was conducted at moderate values of Re in which 0 less than or equal to..cap alpha.. less than and equal to 180/sup 0/ force and moment data were obtained for four symmetrical blade-candidate airfoil sections (NACA-0009, -0012, −0012H, and -0015).
Journal ArticleDOI
Wind tunnel and numerical study of a small vertical axis wind turbine
TL;DR: In this article, a combined experimental and computational study into the aerodynamics and performance of a small scale vertical axis wind turbine (VAWT) was presented, where wind tunnel tests were carried out to ascertain overall performance of the turbine and two-and three-dimensional unsteady computational fluid dynamics (CFD) models were generated to help understand the aerodynamic of this performance.
Journal ArticleDOI
Vertical axis wind turbine-a review of various configurations and design techniques
Muhammad Mahmood Aslam Bhutta,Nasir Hayat,Ahmed Uzair Farooq,Zain Ali,Sh. Rehan Jamil,Zahid Hussain +5 more
TL;DR: In this article, the authors reviewed various configurations of VAWT along with their merits and demerits and found that coefficient of power for various configurations is different and can be optimized with reference to Tip Speed Ratio.
Journal ArticleDOI
The Darrieus wind turbine: Proposal for a new performance prediction model based on CFD
TL;DR: In this article, a CFD model for the evaluation of energy performance and aerodynamic forces acting on a straight-bladed vertical-axis Darrieus wind turbine is presented. But the model is not suitable for the application of wind turbines to the power grid.