Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 190 for “"turbine blades"”.
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Unsteady separation control on wind turbine blades
… of the primary causes of unsteady loads on wind turbine blades. The process can be instigated by a multitude of factors, common in wind turbine operating environments, such as inflow turbulence, wind gusts and sustained yaw misalignment. The unsteady separation due to dynamic stall can lead to …
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Reducing the Environmental Impact of Wind Turbine Blades
… rapidly over the last two decades. Wind turbines (WT) are arguably clean during operation, offering minimal pollution and zero CO2 emissions, but significant amounts of energy are used and CO2 emitted during their manufacture, and, furthermore, the turbines are environmentally problematic …
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Prediction of Aerodynamic Noise Generated By Wind Turbine Blades
… the aerodynamic noise generated by wind turbine blades involves accurate prediction of aerodynamic noise generated by a wind turbine rotor which can be 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 …
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Integral boundary layer heat transfer prediction on turbine blades
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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Experimental study of impingement cooling in rotating turbine blades
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1983.
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Impedance-Based Structural Health Monitoring of Wind Turbine Blades
… One of the key components in improving wind turbines is their blades. Blade failure is very costly because blade failure can damage other blades, the wind turbine itself, and possibly other wind turbines. A successful structural health monitoring (SHM) system incorporated into wind turbines …
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Passive aeroelastic tailoring of wind turbine blades : a numerical analysis
… simulation tools. Passively adaptive rotor blades would enable systematic aeroelastic tailoring and have the potential to reduce the cost of energy by around 6% [1]. Within this thesis a design procedure for passively adaptive rotor blades has been developed. It consists of an aerodynamic …
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Mechanical Characterization Of Composite Repairs For Fiber-Glass Wind Turbine Blades
<p>While in service, wind turbine blades experience various modes of loading. An example is impact loading in the form of hail or bird strikes, which might lead to localized damage or formation of cracks a few plies deep on the blade surface. One of the methods to conduct repairs on wind turbine …
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The prediction of unsteady three-dimensional aerodynamics on wind turbine blades
… the main features of the aerodynamics of wind turbines, a review of key theoretical studies and aerodynamic modelling methods provides the opportunity to focus on predictive methods and the main technical challenges associated with the aerodynamics of HAWTs. The basic aerodynamic method adopted …
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Aerodynamic design and analysis of small horizontal axis wind turbine blades
The exploitation of small horizontal axis wind turbines provides a clean, prospective and viable option for energy supply. Although great progress has been achieved in the wind energy sector, there is still potential space to reduce the cost and improve the performance of small wind turbines. An …
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The impact of evaporatively cooled turbine blades on gas turbine performance
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1995.
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Modeling of Alford force and tip clearance flow for turbine blades
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.
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Development of an Electromagnetic Energy Harvester for Monitoring Wind Turbine Blades
Wind turbine blades experience tremendous stresses while in operation. Failure of a blade can damage other components or other wind turbines. This research focuses on developing an electromagnetic energy harvester for powering structural health monitoring (SHM) equipment inside a turbine blade. The …
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Effects of Sand Ingestion on the Film-Cooling of Turbine Blades
Gas turbine engines for propulsion operate under harsh conditions including gas temperatures that exceed the melting point of the metal, high mechanical stresses, and particulate ingestion such as sand. To maintain a low and uniform metal temperature to extend the life of a turbine component, a …
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Bonding mechanisms in the application of thermal barrier coatings to turbine blades.
… barrier coatings (TBC's) are used to protect gas turbine blades from environmental degradation as well as to increase thermodynamic efficiency. Most TBC systems consist of a ceramic thermal barrier coating such as partially stabilized zirconia adhering to an oxidation resistant bond coat, which in …
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