vertical axis wind turbine IEEE PAPER
Performance testing of a small vertical-axis wind turbine
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Development of wind energy use in urban environments is of growing interest to industry and local governments as an alternative to utility-based and non-renewable forms of electric production [1]. Although most performance testing for small-scale wind turbines is
Effect of camber air foil on self starting of vertical axis wind turbine
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ABSTRACT Darrieus type Vertical Axis Wind Turbine (VAWT) is attracting many researches for its inherent advantages and its diversified applications. However, a disadvantage is when the rotor is stationary; no net rotational force arises, even at high wind speed. The
Aerodynamic shape optimization of a vertical-axis wind turbine using differential evolution
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The purpose of this study is to introduce and demonstrate a fully automated process for optimizing the airfoil cross-section of a vertical-axis wind turbine (VAWT). The objective is to maximize the torque while enforcing typical wind turbine design constraints such as tip
Measured data for the Sandia 34-meter vertical axis wind turbine
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Issued by Sandia National Laboratories., operated for the United States Department of Energy by Sandia Corporation. NOTICE: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States
Effect of blade number on a straight-bladed vertical-axis Darreius wind turbine
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Abstract:This paper presents a mean for reducing the torque variation during the revolution of a vertical-axis wind turbine (VAWT) by increasing the blade number. For this purpose, twodimensional CDF analysis have been performed on a straight-bladed Darreius-type
Effects of blade preset pitch/offset on curved-blade Darrieus vertical axis wind turbine performance
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Abstract Current designs of curved-blade Darrieus vertical-axis wind turbines (VA WTs) have blades mounted in such a way that the position vector from the axis of rotation intersects the blade chord perpendicularly between the-25') 0 and-50')" chord points. This paper
Measurements of surface pressures on an operating vertical-axis wind turbine
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ABSTRACT This report describes measurements of surface pressures on a vertical-axis wind turbine using pressure transducers mounted at the equator of one blade of the rotor. These pressure transducers were monitored as a function of relative rotor position and
Torque ripple in a vertical axis wind turbine
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ABSTRACT Torque ripple is a name given to gated through the drive train of wind covers an analytical and experimental rieus vertical axis wind turbine. An time variations in torque which are propaenergy conversion systems. This paper investigation of torque ripple in a
A general method for fatigue analysis of vertical axis wind turbine blades
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Abstract The fatigue life of wind turbine blades that are exposed to the random loading environment of atmospheric winds is described with random data analysis procedures. The incident wind speed and the stresses caused by these winds are expressed in terms of
Numerical modeling of vertical axis wind turbine (VAWT)
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This report was a result of my master thesis in the Master of Wind Energy degree at Technical University of Denmark. The thesis work was started at July in 2004 and finished after six months. During this period, associate Professor Wen-Zhong Shen at Fluid
A method for modeling of floating vertical axis wind turbine
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Abstract It is of interest to investigate the potential advantages of floating vertical axis wind turbine (FVAWT) due to its economical installation and maintenance. A novel 5MW vertical axis wind turbine concept with a Darrieus rotor mounted on a semi-submersible support
Prediction capabilities in vertical-axis wind turbine aerodynamics
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ABSTRACT: The paper summaries the progress made in the development of the different state-of-the-art numerical tools for simulating the flow field around the vertical-axis wind turbine as well as the dynamic-stall phenomenon. More specifically, the paper highlights
Experimental verification of a mathematical model for predicting the performance of a self-acting variable pitch vertical axis wind turbine.
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ABSTRACT A mathematical model has been developed to predict the performance of self- acting variable pitch vertical axis wind turbines (SAVPVAWTs) and hence to select optimum settings for pitch control parameters for any desired performance characteristic. This
CFD simulation of dynamic thrust and radial forces on a vertical axis wind turbine blade
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ABSTRACT This project is motivated by an expected vibration source of a small scale vertical axis wind turbine. The dynamic loading on the blades of the turbine, as they rotate about the central shaft and travel through a range of relative angles of attack (and thus lift
Design and aero-elastic simulation of a 5MW floating vertical axis wind turbine
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Abstract This paper deals with the design of a 5MW floating offshore Vertical Axis Wind Turbine (VAWT). The design is based on a new offshore wind turbine concept (DeepWind concept), consisting of a Darrieus rotor mounted on a spar buoy support structure, which is
Study Analysis of Hybrid Power Plant (Wind-Solar)-Vertical Axis Wind Turbine-Giromill Darrieus Type with Evacuated Tube Collectors
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ABSTRACT: The vital input for the growth of any nation is energy. In India, so many types of energies playing a major role. It has become inevitable to seek nonpolluting renewable energy sources for the power generation. So Renewable energy technologies range from
The Performance of a Vertical Axis Wind Turbine in Fluctuating Wind-A Numerical Study
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Abstract CFD simulations of VAWT operation in unsteady wind conditions have been conducted. Validation of the numerical model was carried out by comparison to experimental data of a wind tunnel scale rotor. The performance of the VAWT under
Effect of rotor blade position on Vertical Axis Wind Turbine performance
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Abstract In this paper a numerical study is presented with the aim of evaluating the performance output of three Vertical Axis Wind Turbine (VAWT) configurations. Here using Computational Fluid Dynamics (CFD) a two-dimensional Multi Reference Frame (MRF)
Multi-megawatt vertical axis wind turbine
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LongevityTransportation and erectionReduced maintenance Page 7.VertAx Wind Ltd 2009 7 Vertical Axis Wind Turbine Page 8.VertAx Wind Ltd 2009 8 Vertical Axis Wind Turbine Energy Captureis what it's all about! Page 9.VertAx Wind Ltd 2009 9
Test plan for the 34 meter vertical axis wind turbine test bed located at Bushland, Texas
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Issued by Sandia National Laboratories, operated for the United States Department of Energy by Sandia Corporation. NOTICE: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States
Conceptual design of a floating support structure and mooring system for a vertical axis wind turbine
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Abstract This paper deals with the conceptual design of a floating support structure and mooring system for a 5MW vertical axis offshore wind turbine. The work is carried out as part of the DeepWind project, where the main objective is to investigate the feasibility of a
Modeling of a vertical axis wind turbine with permanent magnet synchronous generator for Nigeria
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ABSTRACT The performances of a vertical axis wind turbine (VAWT) with permanent magnet synchronous generator (PMSG) under low and unsteady wind speed is investigated and Modelled in this paper. The ever increasing demand for electrical energy has led to
The LIFE Computer Code Fatigue Life Prediction for Vertical Axis Wind Turbine Components
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ABSTRACT The LIFE computer code was originally written by Veers to analyze the fatigue life of a vertical axis wind turbine (VAWT) blade. The basic assumptions built into this analysis tool are: the fatigue life of a blade component is independent of the mean stress;
Development of optimum design configuration and performance for vertical axis wind turbine
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Executive SummaryStages and Gates MethodologyIndependent Assessment Appendices o Appendix A: Final Report (under separate cover) o Appendix B: Awardee
Optimization of a vertical axis micro wind turbine for low tip speed ratio operation
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Vertical axis wind turbines offer a safe, inexpensive solution for off-grid power generation in remote areas. They can be located closer to the ground than horizontal axis machines. The rotational speeds and blade stresses are much lower than those on horizontal axis
The Darrieus rotor, a vertical axis wind turbine (VAWT) with only a few advantages and many disadvantages
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It is allowed to copy this report for private use.Design is not available for discussions about
Vertical axis micro wind turbine design for low tip speed ratios
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ABSTRACT A small-scale vertical axis wind turbine (VAWT) is developed for use in areas lacking adequate energy infrastructure; the materials and methods of construction are selected to minimize cost as much as possible. In order to overcome the self-starting
Airfoil selection for a straight bladed circulation controlled vertical axis wind turbine
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Abstract A vertical axis wind turbine (VAWT) prototype is being developed at West Virginia University that utilizes circulation control to enhance its performance. An airfoil was chosen for this turbine based on its performance potential, and ability to incorporate circulation
Design and construction of H-type vertical axis wind turbine
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ABSTRACT The measurement of the wind velocity acting on the wind turbine is important for the development of wind turbine technology. The power produced by the wind turbine is influenced by its two major part, wind power and belt power transmission system. The
A numerical investigation into the effects of fluctuating wind on the performance of a small scale vertical axis wind turbine
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Abstract CFD simulations of VAWT operation in unsteady wind conditions have been conducted. Validation of the numerical model was carried out by comparison to experimental data of a wind tunnel scale rotor. The performance of the VAWT under
Vibration analysis of a vertical axis wind turbine blade
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The motivation for this project arose from an expected vibration source of a small-scale vertical axis wind turbine currently undergoing field-testing. The turbine consists of three 3 metre long vertically aligned blades each fixed to the central shaft by two horizontal arms
Measurements and calculations of aerodynamic torques for a vertical-axis wind turbine
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Abstract This report describes measurements of aerodynamic torque on a vertical-axis wind turbine. Accelerometers mounted at the equator of the rotor and a torque meter mounted at the base of the rotor were used to compute the net aerodynamic torque acting on the rotor.
Development of a new blade profile for a vertical axis wind turbine
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To improve rotation performance of vertical axis wind turbine, we propose new blade cross section Type-B effective for wide range of wind speed. Its performance is evaluated by
Performance evaluation of curved blades vertical axis wind turbine
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Abstract Wind is a natural resource and it can be used as an alternative energy. Many sites in Thailand have satisfactory potential of wind energy such as the average wind energy of Chiang Mai was 128.95 W/m 2 and many locations in Northern part of Thailand are
Performance Predictions of a Circulation Controlled-Vertical Axis Wind Turbinewith Solidity Control
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Abstract Conventional straight bladed vertical axis wind turbines are typically designed to produce maximum power at tip speed ratio, but power production can suffer when operating outside of the design range. These turbines, unless designed specifically for low speed
Unsteady flow simulation of a vertical axis wind turbine: a two-dimensional study
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ABSTRACT As the integration of vertical axis wind turbines in the built environment is a promising alternative to horizontal axis wind turbines, a 2D computational investigation of a vertical axis wind turbine is proposed and analysed. In the CFD analysis, three
Torque and power coefficients of a vertical axis wind turbine with optimal pitch control
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Abstract Vertical axis wind turbines (VAWT) have been valued in recent years for their low manufacturing cost, structural simplicity and convenience of applications in urban settings. Despite their advantages, VAWTs have several drawbacks including low power coefficient
Lightning protection for the vertical axis wind turbine
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ABSTRACT This report contains the results of lightning protection studies for Vertical Axis Wind Turbines. The methodology is established for determining the chances for a lightning strike at a VAWT site. Proposed designs for lightning protection systems are described.
An Approach to the Fatigue Analysis of Vertical Axis Wind Turbine Blades
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Abstract A cursory analysis of the stress history of wind turbine blades indicates that a single stress level at each wind speed does not adequately describe the blade stress history. A statistical description is required. Blade stress data collected from the DOE/ALCOA Low
Rotor instrumentation circuits for the Sandia 34-meter vertical axis wind turbine
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ABSTRACT Sandia National Laboratories has erected a research oriented, 34-meter diameter, Darrieus vertical axis wind turbine near Bushland, Texas, which has been designated the Sandia 34-m VA WT Test Bed. To meet present and future research needs,
Vertical axis wind turbine designed aerodynamically at Tokai University
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About one year before the world-wide energy CrISIS of 1973, Dr. Shigeyoshi Matsumae, President of Tokai University, emphasized that research on the conversion of continuous energy resources was the most important problem in Japan, a country where oil or other
Conceptual model of vertical axis wind turbine and CFD analysis
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Abstract:Fossil fuels are depleting at very fast rate and will have shortages in near future. Also prices of fuels increases day by day, demands for renewable energy sources increases for electrical power generation. Wind energy is available in nature in free of cost and in
Design of alternative energy systems: A self-starting Vertical Axis Wind Turbine for stand-alone applications (charging batteries)
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Abstract A general aerodynamic optimization method was used to improve the torque characteristics of a multiblade vertical axis wind turbine. A decomposition, deformation, and reassembly method was developed to accommodate the variable geometry of the blade
A design code to study vertical-axis wind turbine control strategies
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ABSTRACT A computer code called ASYM is described. designer to examine the role of low and high wind speed cut-in and cutout control strategies on the production of energy and the consqtion of fatigue life by a wind turbine. The primary goal of the code development has
Effects of Unsteady Aerodynamics on Vertical-Axis Wind TurbinePerformance
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Modification of construction design of vertical axis wind turbine
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Abstract: Paper deals with one of the possibility how to improve the basic design of vertical axis wind turbine (VAWT) from the view of optimal output parameters. CFD (Computer Fluid Dynamics) software is used to complex analysis of wind turbine in two operation cases.
Experimental study of runners for vertical axis wind turbine
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Abstract: The work presents the results of experimental study of a wind turbine with a vertical axis. Research to make on test rig7 in the laboratory of hydropower and hydraulic turbomachinery of the Technical University of Sofia. Examined the characteristics of a
Wind tunnel test on a straight wing vertical-axis wind turbine with attachment on blade surface
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Abstract Recently, many straight wing vertical-axis wind turbines (SW-VAWT) are installed in community, urban areas and high mountain areas as an independent power supply or community power. However, when the SW-VAWT is used in cold regions, the icing will
Design and development of a vertical axis micro wind turbine
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Diagram. 2 Impact of low wind speed events 23 Diagram. 3 Performance comparison between RFPM and AFPM machines due to Torque/moment of inertia 31 Diagram. 4 Performance comparison between RFPM and AFPM machines due to Power/active
A Straight-Bladed Vertical Axis Wind Turbine With a Directed Guide Vane: Mechanism of Performance Improvement
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Abstract A straight-bladed vertical axis wind turbine with a directed guide vane has been proposed in order to enhance its torque. The experimental study of the proposed wind turbine was carried out by a wind tunnel with an outlet diameter of 1.8 m. The tested rotor
Development of safe vertical axis wind turbine for over speed rotation
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ABSTRACT SW-VAWT (Straight Wing Vertical Axis Wind Turbine) generally includes an over speed rotation problem. To inhibit this problem, a revolution speed of wind turbine is controlled by a mechanical break system or an electric-magnetic break system. In this
Scaling of vertical axis wind turbine dynamic stall
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Abstract Vertical axis wind turbines (VAWT) are an alternative to horizontal axis wind turbines (HAWT) for wind and tidal energy harvesting applications. Studies of vertical axis wind turbines have heavily invested in understanding the behaviour of the complete
CFD Study of a Darreous Vertical Axis Wind Turbine
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is a widely used 'buzzword'of these days for most of the companies and even for the policy makers. Some significant steps for saving the environment are-recycling the pop cans, using bio-degradable packaging materials, reducing the wastage of papers,
Computational modelling of H-type Darrieus Vertical Axis Wind Turbine with multi element airfoil blades
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ABSTRACT Vertical axis wind turbines (VAWT) have received considerable attention in the recent years due to their advantages compared with horizontal axis wind turbines in urban applications. The Darrius rotor and the H rotor turbine are VAWTs which employ airfoil
A free wake method for vertical-axis wind turbine performance prediction
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Based on the lifting line theory and a free vortex wake model, a method including dynamic stall effects is presented for predicting the performance of a three-dimensional vertical-axis wind turbine. A vortex model is used in which the wake is composed of trailing streamwise
Aerodynamic Optimization and Open Field Testing of a 1 kW Vertical Axis Wind Turbine
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of a 1 kW VerticalAxisWindTurbine Gabriele Bedon1, Marco Raciti Castelli1, Uwe Schmidt Paulsen2, Luca Vita2, Ernesto Benini1is shown in Figure 10. The aerodynamic design of a commercial verticalaxiswindturbine is improved by
The Low Cost Vertical Axis Wind Turbine Project,'
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Abstract This is a student--led paper describing a multi--year hands--on project. The low-- cost Vertical Axis Wind Turbine(VAWT) is a research and development testbed, aimed to refine analyses, design features and construction techniques that will go into devices
Development of velocity flow field measurement method around a vertical axis wind turbine blade using particle image velocimetry
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Abstract:The vertical axis wind turbine aerodynamics are highly complex and unsteady. Inherent in the operation of VAWTs is the presence of the dynamic stall phenomenon that has a major influence in the overall performance of the rotor. The acquisition of a reliable
A low cost power tracking controller for a small vertical axis wind turbine
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ABSTRACT The paper presents a low cost power electronic solution for a system consisting of a savonius-type wind turbine with a direct-drive permanent magnet generator, for battery charging applications. The converter increases the energy capture at low wind speeds
Nova project: lessons learnt during the conceptual phase of the design of a floating support structure for an offshore vertical axis wind turbine
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Abstract The Energy Technologies Institute (ETI, UK) funded project called NOVA (for Novel Vertical Axis wind turbine) examined the feasibility of a large offshore vertical axis wind turbine in the 5 to 10 MW power range, with a view toward 20 MW. The NOVA feasibility
An experimental study of the aerodynamics and performance of a vertical axis wind turbine in a confined and unconfined environment
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This paper presents the results of a wide experimental study on an H-type vertical axis wind turbine (VAWT) carried out at the Politecnico di Milano. The experiments were carried out in a large-scale wind tunnel, where wind turbines for microgeneration can be tested in real-
Vertical axis wind turbine drive train transient dynamics
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Abstract Start-up of a vertical axis wind turbine causes transient torque oscillations in the drive train with peak torques which may be over two and one-half times the rated torque of the turbine. These peak torques are of sufficient magnitude to possibly damage the drive
Aerodynamic Characteristics of a Vertical Axis Vane Type Wind Turbine
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ABSTRACT This research work has been carried out to study the aerodynamic characteristics and to analyze the effect on an equally spaced vertical axis four, five and six bladed vane type rotor. The aerodynamic characteristics ie torque coefficient, drag
An experimental vertical-axis wind turbine system with Bellshion blades
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Information about the importance of solar and wind power is getting around, and with growing awareness of environmental problems, the use of renewable energy is increasing. The construction of small wind generators is developing more and more worldwide to
Fluid Structure Interaction Modelling of A Novel 10MW Vertical-Axis Wind Turbine Rotor Based on Computational Fluid Dynamics and Finite Element Analysis
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Deployment of offshore wind farms over the past decade has highlighted several difficulties associated with conventional wind turbines. Conventional HAWTs (horizontal-axis wind turbines) place their main components (such as the rotor and generator) at the top of very
Visualization study on the static flow field around a straight-bladed vertical axis wind turbine
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ABSTRACT Visual experiments based on the smoke wire way were carried out on a small model of Straight-blade Vertical Axis Wind Turbine (SB-VAWT) to invest the relationship between the static flow field characteristics and the rotor azimuth angle. The test rotor had
Study on the effect of blade profile, number of blade, Reynolds number, aspect ratio on the performance of vertical axis wind turbine
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Abstract:This paper present the effect of blade profile, number of blade, surface roughness of blade, aspect ratio and Reynolds number on the performance of vertical axis wind turbine. A numerical analysis, adopting the multiple stream tube (MST) method, is carried out to
Design optimization and analysis of vertical axis wind turbine blade
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Wind Energy is clean and renewable source of energy and is also the world's fastest growing energy resource. Keeping in view power shortages and growing cost of energy, the low cost wind energy has become a primary solution. It is imperative that economies and
Experimental Aerodynamic Analysis of a Slow Running Vertical Axis Wind Turbine
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Abstract A new type of slow running vertical axis wind turbine (VAWT) was patented by Agile Wind Power AG (Switzerland). In this concept, a variable blade pitch allows to exploit both aerodynamic lift and drag contributions. In operation, blade-vortex interactions and
Design of rotor blade for vertical axis wind Turbine using double aerofoil
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ABSTRACT Nowadays, small vertical axis wind turbines are receiving more attention compared to horizontal wind turbines due to their suitability in urban use because they generate less noise, have bird free turbines and lower cost. There is few vertical axis wind
Circulation production and shedding from vertical axis wind turbine blades undergoing dynamic stall
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ABSTRACT Dynamic stall of vertical axis wind turbine blades strongly affects the efficiency of vertical axis wind turbines, especially at low tip speed ratios. Here we report measurements using stereoscopic particle image velocimetry of the dynamic stall
Design of Vertical Axis Wind Turbine with Movable Vanes
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Abstract: This paper designs the rotor wind turbine, which uses more effectively the wind energy and depends only on the acting area of the vanes. The vane wind turbine is designed to reduce negative torque in the frame work at the opposite direction of wind, by
Thermal Analysis of Vertical Axis Wind Turbine
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Abstract:For efficient utilization of the available wind energy, it is imperative to study the behaviour and performance of the wind turbines subjected to aerodynamic and ambient conditions. Understanding the possible behaviour of the system leads up to the
The LowCost Vertical Axis Wind Turbine Project: An exercise in learning across disciplines
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Abstract This is a student-led paper describing a multi-year hands-on project. The low-cost Vertical Axis Wind Turbine (VAWT) is a research and development testbed, aimed to refine analyses, design features and construction techniques that will go into devices suitable for
A Review on the Self-Energize Structural Health Monitoring (SHM) in Vertical Axis Wind Turbine (VAWT) System
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Abstract: Wind energy is one of the renewable energy sources which the trend is positive and increasing year by year. This technology applied widely in several regions in the world and already has maturity in technology, good infrastructure and relative cost
Evaluation of point-forcing models with application to vertical axis wind turbine farms
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For our initial model validation and testing, we compute the flow over a single cylinder at Re= U8 D/= 300. We consider the cases of both a stationary and a rotating cylinder. For the stationary cylinder, we compare our results to the direct numerical simulation (DNS) of
Three-Dimensional Velocity Measurements Around and Downstream of a RotatingVertical Axis Wind Turbine
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Abstract Modern designs for straight-bladed vertical axis wind turbines (VAWTs) feature smaller individual footprints than conventional horizontal axis wind turbines (HAWTs), allowing closer spacing of turbines and potentially greater power extraction for the same
Vertical axis wind turbine with continuous blade angle adjustment
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ABSTRACT The author presents a concept for a vertical axis wind turbine that utilizes each blade's entire rotational cycle for power generation. Each blade has its own vertical axis of rotation and is constrained to rotate at the rate of one half of a revolution per full revolution
Fourier Coefficients of Aerodynamic. Torque Functions for the DOE/Sandia 17-M Vertical Axis Wind Turbine
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ABSTRACT The spectral characteristics of the aerodynamic torque on wind turbines are important in assessing drivetrain performance. This paper describes a Fast Fourier Transform method to deduce Fourier coefficients for the periodic torque functions
Innovation for a reduction of the yaw moment on a floating platform with a vertical-axis wind turbine
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Abstract Three designs of a floating spar platform for a vertical-axis wind turbine (VAWT) are considered, including two novel designs. The novel designs convert the rotary motion of the platform to a translational motion (namely, heave), to reduce the maximum yaw stiffness
Studies regarding designing and testing of a multicolor helical wind turbinewith vertical axis for a power of 1000 w
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Abstract:-In the paper is presented a wind turbine with vertical axis helical type, which can have one or two rotors on a common spindle which were performed in experimental tests very good energetic results even at low wind speed. This type of wind turbine doesn't
Numerical Study of Aeroelastic Behaviour of a Troposkien Shape Vertical Axis Wind Turbine
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Abstract A methodology for aeroelastic analysis of Vertical Axis Wind Turbines (VAWTs) with troposkien geometry is developed. The structural dynamic equations used in this analysis represent the behaviour of a three dimensionally curved beam in terms of generalized
AERODYNAMIC ANALYSIS AND OPTIMIZATION OF 400W VERTICAL AXIS WIND TURBINE
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Accurate aerodynamic Analysis of wind-turbine system has been challenged across the world. However, Vertical axis wind turbine evaded by engineers cause of complicated aerodynamic analysis with dynamic stall even if it has a lots of advantages. In the present
Review on Aerodynamic Performance Evaluation of Straight Blade Vertical Axis Wind Turbine
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Abstract:As the energy crisis is getting severe in the world it will be important to investigate alternative methods of generating power in ways different than, fossil fuels. In fact, one of the biggest sources of energy is all around us all of the time, the wind. Currently, horizontal
ANALYSIS, FABRICATION AND TESTING OF VERTICAL AXIS WIND TURBINE
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Abstract:Wind energy is an indirect form of solar energy since wind is introduced chiefly by the uneven heating of the earth's crust by the sun. The conversion of this wind energy into electrical energy can reduce the power deficit to large extent. Vertical axis wind turbines (
The Design Challenges of Large, Deep-Water, Vertical-Axis Wind TurbineRotors
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Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration
Computational Fluid Dynamics (CFD) Study for an Augmented Vertical Axis Wind Turbine (AVAWT)
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ABSTRACT In this paper a numerical study is conducted in analysing the flow inside and around a stator of an Augmented Vertical Axis Wind Turbine (AVAWT). Several simulations are presented (using the ANSYS CFX 12.0 software) for different sized stators, vane
Wind tunnel and CFD models of a vertical axis wind turbine with power augmentation guide vanes
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ABSTRACT This study aims at evaluating the efficiency of a three-blade Savonius small vertical axis wind turbine (VAWT), surrounded by a power augmentation guide vane (PAGV). The PAGV system is designed to improve the wind rotor performance by increasing the on
TURBULENCE INTENSITY EFFECTS ON THE VERTICAL AXIS WIND TURBINESTARTING EFFICIENCY
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Abstract In this paper, the authors performed a series of numerical analysis using CFD methods for the study of turbulence intensity effects on the efficiency of a wind turbine vertical axis Darrieus type, at the starting point. These analyzes have the tip speed ratio
Increase drag coefficient for special design cavity frame vertical axis wind turbine
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ABSTRACT Wind energy as a power source is attractive as an alternative to fossil fuels, because it is plentiful, renewable, widely distributed, green, and produces no greenhouse- gas emissions. A performance improvement of the scoop-vane vertical axis wind turbine is
Case Study: Dynamic Analysis of a Novel Vertical Axis Wind Turbine
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ABSTRACT An analytical model was developed for the dynamic evaluation of a novel vertical axis wind energy system. This study was conducted early on in the design process, so the goal was to create a low level tool to determine if the concept was feasible, to
Parametric Study of Vertical Axis Wind Turbine
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ARFAOUI aAbstractIn this work, the effect of a number of design parameters on the performances of a Darrieus type verticalaxiswindturbine (VAWT) is studied.
Innovative Design of Vertical Axis Wind Turbine
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Methods The wind turbines can be classified as: i) Horizontal axis wind turbines (HAWT), and ii) Vertical axis wind turbines (VAWT). The HAWT is fully developed and the size is growing higher. Whereas, the VAWT is not developed because of the less efficiency and
IMPROVED PERFORMANCE OF H-DARRIEUS VERTICAL AXIS WIND TURBINEWITH EMPHASIS ON START-UP BEHAVIOR
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Installation of H-type vertical axis wind turbines in many cases limited by the inherent start- up issue associated with this type of turbines. This could be of crucial importance in environments with low average wind speed. For the purpose of investigation on start-up
New Urban Vertical Axis Wind Turbine Design
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Abstract. A different approach for enhancing the performance of a Vertical Axis Wind Turbines (VAWT) for the use in the urban or rural environment and remote isolated residential areas is developed in this study. Recently the small VAWT became more
EXPERIMENTAL AND CFD ANALYSIS OF THE FLOW IN THE WAKE OF AVERTICAL AXIS WIND TURBINE
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Abstract. The wake generated by a vertical axis wind turbine is investigated experimentally and numerically. The experiments were conducted in an open-jet wind tunnel. The selected velocity is 4.83 m/s. In this study, a model of a commercial turbine developed by KLIUX
Design and verification of vertical axis wind turbine simulation model
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Abstract. In the course of this research the vertical axis wind turbine simulation model has been designed and verified using the MATLAB SIMULINK tool for transient process simulation. The research was based on the study of the real vertical axis wind turbine,
Massively Parallel High-order Spectral Difference Method for Large Eddy Simulation of Vertical Axis Wind Turbine and Oscillating Wing Wind Turbine
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Recently, the high-order methods based on the strong froms of the compressible Navier- Stokes equations, eg, flux reconstruction method or the spectral difference method, are proven efficient, robust, and accurate for large eddy simulations on unstructured grids
Aerodynamic performance and wake effect study of straight-bladed vertical axis wind turbine
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Wind energy is renewable, cost-effective and environmental-friendly compared to the depleting fossil fuels and has great potential for mass production of electricity generation. Wind turbine (WT), onshore and offshore, has been proved to be the best tool to harness
Vertical axis wind turbine design load cases investigation and comparison with horizontal axis wind turbine
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Abstract The paper studies the applicability of the IEC 61400-1 ed. 3, 2005 International Standard of wind turbine minimum design requirements in the case of an onshore Darrieus VAWT and compares the results of basic Design Load Cases (DLCs) with those of a 3-
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