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Tamayo-Avenda, J.M. (author)
master thesis 2017
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Ramanujam Ramdoss, V.D. (author)
master thesis 2017
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Bagde, R. (author)
The increasing globalwarming and climate change has boosted research on sustainable energy in the last few decades leading to a lot of research being carried out on wind energy. Wind turbines have played a major role in harvesting wind energy withHorizontal AxisWind Turbines (HAWTs) being the dominant design. However, for urban and offshore...
master thesis 2017
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Houf, D.P. (author)
Due to its inherent dynamic stability the Vertical Axis Wind Turbine (VAWT) is a strong candidate for large (10-20 MW) floating offshore applications. However, there is room for improvement considering the VAWT’s aerodynamic and structural performance, so as to increase its cost-effectiveness. This thesis explores the VAWT’s potential of...
master thesis 2016
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Koppenol, B.S. (author)
An ever-increasing demand for electricity pushes the wind energy industry to deep waters that favor floating concepts. Vertical axis wind turbines (VAWTs) failed for onshore applications in the 1980s, but its advantages raise the potential for competitive floating designs and ultimately lowering the cost of energy. This thesis aims to (1) better...
master thesis 2016
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Nedumaran, A.K. (author)
Vortex Generators (VGs) are flow control devices commonly applied in wind turbine blades, among other applications. A significant advance in the design of wind turbine blades would be the integration of vortex generators in the aerofoil optimisation process. Currently, aerofoil optimisation relies on either computational fluid dynamics or...
master thesis 2016
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Kemp, R. (author)
This thesis addresses the process of airfoil optimization for vertical axis wind turbines (VAWT). The airfoils are designed for large scale turbines above 5 MW. The VAWT concept is relevant for offshore floating wind energy, because of its low center of gravity (stability) and their simplicity (low maintenance). An optimal tip speed ratio of 4-4...
master thesis 2015
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Egilsson, Bjarnthor (author)
master thesis 2015
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Manickathan, L. (author)
The wake geometry of a Vertical Axis Wind Turbine (VAWT) is unlike the standard Horizontal Axis Wind Turbine (HAWT). The blades of the turbine continuously passes through its own wake, creating complex wake-body interactions such as flow separation and dynamic stall, and convectional grid-based numerical method which is capable of describing...
master thesis 2014
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Schelbergen, M. (author)
The knowledge about Vertical Axis Wind Turbines (VAWT) lags behind the knowledge about Horizontal AxisWind Turbines (HAWT), since most of the development of VAWT’s ceased after the 80’s. A lack of insight exists about how certain design parameters affect the rotor design of a modern VAWT. The objective of this thesis is to gain knowledge about...
master thesis 2013
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Shan, Y. (author)
A cross flow actuator based on a turbine concept is a possible choice for the harvest of the kinetic energy from a dynamic flow. Since there is a large potential of energy contained in the water movement of the ocean, it is fascinating to apply turbines to extract energy. In marine flows, currents can be described as steady since their flow...
master thesis 2013
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Krishnaswami, C. (author)
For a wind turbine, the flow downstream of the turbines (wake) is influenced by the power extraction process. This causes a momentum deficit behind the rotor, resulting in lower velocities in the wake than the free-stream velocity. Wind turbines in a wind farm are likely to operate in the wakes of upstream turbines. This drops the power...
master thesis 2013
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He, C. (author)
Recent developments in wind energy have identified vertical axis wind turbines as a favored candidate for megawatt-scale offshore systems. Compared with the direct horizontal axis competitors they poss higher potentials for scalability and mechanical simplicity. The wake dynamics of an H-type vertical axis wind turbine is investigated using...
master thesis 2013
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Lindeboom, R.C.J. (author)
The unsteady flow conditions experienced by wind turbine blades lead to fatigue loads, that increase the cost of energy. The decrease of the impact of these unsteady loads will most certainly lead to a decrease. In order to alleviate unsteady loads the Smart Rotor Blade approach (J.W. van Wingerden et al [2008]) applies spanwise-distributed...
master thesis 2010
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Marelli, M. (author)
master thesis 2010
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Geurts, B.M. (author)
With the increasing size and complexity of wind turbines, also the risk of failure of a crucial component increases. The expected fatigue life of certain subcomponents is an important design requirement. Fatigue damage is triggered by a periodic loading of the construction. The number of load-cycles (and thus the lifetime) and the amplitude of...
master thesis 2009
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Chaves dos Santos, N.P. (author)
Microgeneration is a growing type of energy conversion used for generation of electricity in built environments such as urban areas. Among the different microgeneration technologies present in the market, small wind turbines have been showing a significant growth. The significant dissemination of its use and production and safety issues that...
master thesis 2009
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Kloosterman, M.H.M. (author)
A lot of research has been carried out in the past on wind turbine wake aerodynamics. Models exist for both the near field and the far wake. The near wake is governed by a typical vortex structure that gradually decays due to viscous and turbulent mixing effects, forming the less structured far wake region. The formation of the far field from...
master thesis 2009
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Kotsarinis, C. (author)
The development of wind energy in the built environment is nowadays a growing industry, with several small companies developing different wind turbine designs. However, most of the designs introduced so far were proven to be unsuitable because of the complex urban wind conditions and because of the fact that the design of urban wind turbines is...
master thesis 2009
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Dixon, K.R. (author)
A 3D unsteady multi-body panel method is developed that can model arbitrary geometries. The method has been specifically designed so that it can handle the blade-wake interactions and viscous wake effects that are important for modelling a vertical axis wind turbine (VAWT). A systematic validation and verification of the model is presented...
master thesis 2008
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