Global ETD Search
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Showing 1 to 15 of 15 for “"HAWT"”.
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Effects of wind turbine rotor positioning on tornado induced loads
… simulation on a horizontal axis wind turbine (HAWT) to assess the influence of three-dimensional flows with respect to the HAWT position. The loads were analyzed under two rotor operational conditions, idling and parked, at five radial distances. Subsequently, experimental validation of the …
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Experimental and simulation study of a diffuser augmented wind turbine to enhance the performance by modifying diffuser and rotor
… especially horizontal axis wind turbine (HAWT) type which is more efficient, compared to other conventional wind turbines. However, it is less utilized in urban areas due to the relatively low wind velocity in these areas. In the this work, a technique of augmenting wind by the concept of …
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Optimization of Wind Turbine Airfoils/Blades and Wind Farm Layouts
… generated by a Horizontal-Axis Wind Turbine (HAWT) is a function of the number of blades B, the tip speed ratio λ (blade tip speed/wind free stream velocity) and the lift to drag ratio (C<sub>l</sub> /C<sub>d</sub>) of the airfoil sections of the blade. The airfoil sections used in HAWT …
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The design and testing of a horizontal axis wind turbine with sailfoil blades
… and testing of a horizontal axis wind turbine (HAWT) with Sailfoil blades.<br></br><br></br> Included is a brief history of wind turbine technology, its revival, a review of current wind energy developments and a literature survey of previous work on wind turbines with sail type …
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Time-domain and harmonic balance turbulent Navier-Stokes analysis of wind turbine aerodynamics using a fully coupled low-speed preconditioned multigrid solver
… problems include horizontal axis wind turbine (HAWT) and vertical axis wind turbine (VAWT) operating at design and off-design conditions. On the algorithmic side, the main contribution of this research is the successful development of a rigorous novel approach to low-speed preconditioning (LSP) …
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Nonlinear dynamic analysis of wind turbine towers subject to design wind and seismic loads
Horizontal Axis Wind Turbines (HAWT) may experience catastrophic failures due to very strong wind and/or seismic loads. Such loads, if not properly addressed, may result in excessive deformations which, in turn, may cause significant damage, or even collapse of wind turbines. This research proposes …
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Nonlinear dynamic analysis of wind turbine towers subject to design wind and seismic loads
Horizontal Axis Wind Turbines (HAWT) may experience catastrophic failures due to very strong wind and/or seismic loads. Such loads, if not properly addressed, may result in excessive deformations which, in turn, may cause significant damage, or even collapse of wind turbines. This research proposes …
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Desarrollo y aplicación de procedimientos experimentales para el ensayo en túnel de viento de modelos a escala de turbinas eólicas de eje vertical (VAWT)
… las turbinas eólicas de eje horizontal (HAWT). Sin embargo, los desafíos actuales en este campo (despliegues en entornos offshore de aguas profundas y turbinas de gran capacidad superando los 10MW), así como las mejoras de la red eléctrica (digitalización, sistemas de almacenamiento, …
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Computational and Experimental Study on Vertical Axis Wind Turbine in Search for an Efficient Design
… to energy. Though Horizontal Axis Wind Turbine (HAWT) is more popular but needs high wind speed to generate energy. On the other hand Vertical Axis Wind Turbine (VAWT) needs low wind speed and can be installed anywhere which are some of the reasons for this research. The main objective of this …
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CFD Analysis for Optimization of Vertical Axis Wind Turbine Farms
… than that of Horizontal Axis Wind Turbine (HAWT). Substantial research is going on to improve the efficiency of VAWT. One of the most effective methods of improving the efficiency of VAWT is to operate them on a farm rather than isolated turbines. This project deals with determining the most …
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Vertical Axis Hybrid Wind Turbine
… turbine types, VAWT will be compared with HAWT, and the possible conclusions will be written, and the efficiency based on the location and production output will be analyzed. The main steps include investigating the starting process of the wind turbine, solving the starting process problem, …
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Prediction of Aerodynamic Noise Generated By Wind Turbine Blades
… used a basis for comparison. The NREL Phase VI HAWT rotor has been chosen to perform this study. This is achieved by first predicting the three dimensional flow field around the rotor through CFD analysis using SST k-ω turbulence model for wind speeds of 7m/s, 10m/s, 13m/s and 15m/s. CFD …
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Control design and energy optimisation of a buoyant airborne wind turbine
… to conventional horizontal axis wind turbines (HAWT), the tower is replaced with lightweight tethers resulting in a reduction in both the overall mass, and more importantly cost of the system. Currently, there is significant interest from a number of key stakeholders, both academic and …
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The prediction of unsteady three-dimensional aerodynamics on wind turbine blades
… challenges associated with the aerodynamics of HAWTs. The basic aerodynamic method adopted in this study, a classic Blade Element Momentum theory model, BEM, is described next and its extension to yawed flow is detailed for completeness. Analysis then focuses on how stall delay due to …