Searched for: mods_note_programme_s%3A%22Aerospace%255C%2BEngineering%255C%2B%257C%255C%2BAerodynamics%255C%2Band%255C%2BWind%255C%2BEnergy%22
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Derksen, Adriaan (author)Recent innovations in the off-shore wind industry have lead to bigger wind turbines and taller support structures. These towers can suffer from vortex-induced vibrations (VIV). The present work couples the open-source CFD solver OpenFOAM with a structural solver to investigate these fluid-structure interactions (FSI) effects in more detail. 2D...master thesis 2019
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Saleem, Zohaib (author)Passive root flaps and in particular the Gurney flaps have been employed for improving aerodynamic characteristics for various applications since the 1970's. The effects of passive flaps on two dimensional airfoils have therefore been studied extensively, however, research on their application to Horizontal axis wind turbine blades (HAWT) is...master thesis 2019
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Patil, Kaustubh (author)In experimental aerodynamics, pressure is an important parameter which provides insight into the various features of the flow around the test object. By obtaining the surface pressure information, various inferences can be drawn such as flow separation, local flow velocity etc. Traditionally, the most common method of obtaining pressure has been...master thesis 2019
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Habiboella, Amrien (author)To increase the total wind farm power output, the wind farm layout needs to be optimized. The power output of a wind turbine depends on the incoming velocity, while the velocity is influenced by the wake of the upstream wind turbines. Wind Farm Layout Optimization (WFLO) problems makes use of the so called low fidelity wake models, which...master thesis 2019
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Tatomir, Niko (author)Aeroelastic stability must be maintained for the entire flight duration. Of the vast phenomena that fall under the field of aeroelasticity, flutter is the most studied and influential in terms of driving aircraft design. As such, it is the main topic of analysis of this Master Thesis. For flutter analysis, it is of critical importance to...master thesis 2019
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De Petter, Christophe (author)Shock-Wave/Turbulent-Boundary Layer Interactions (SWTBLI) often occur in applications of technological interest. The associated inherent low-frequency unsteadiness dictates the use of Large-Eddy Simulation (LES) approaches to resolve the interaction, which unavoidably implies a very high computational cost. For this reason, no well-resolved long...master thesis 2019
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Verheul, Harm (author)To achieve the goals set in the Paris agreement, it is required to replace fossil energy by renewable energy. One source of renewable energy, also used extensively at the start of the industrial revolution, is the wind. The cost of wind energy might be reduced by building split wind turbine blades. In this thesis, three main subjects related to...master thesis 2018
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Kroon, Erik (author)A new field of study has arisen within Wind Energy known as ‘Airborne Wind Energy’ (AWE). Although the concept of AWE has been around for a long time, there has been little development in this field until recently. This thesis adds to this development.<br/><br/>The focus lies on airfoil design in order to improve existing AWE systems and...master thesis 2018
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Faber, Mark (author)Aeroelastic codes are fundamental for the design of wind turbines and the prediction of instabilities. Such codes rely on engineering models which limit their accuracy. With wind turbine blades becoming more slender to lower the costs, it is important to reduce these uncertainties to maintain a safe and stable turbine design. The dynamic stall...master thesis 2018
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Xavier, Donnatella Germaine (author)This Masters thesis is a new perspective on Large Eddy Simulation. The capability of goal oriented model constrained optimization technique to generate stable reduced order models without any additional stabilization term or subgrid scale modelling has been demonstrated. The low dimensional projection modes sought by the optimization program...master thesis 2018
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Bossuyt, Ottelien (author)The wind field and, more importantly, the power production change when downstream wind turbines are located in the wake of an upstream wind turbine. Wind farms become larger and therefore the field becomes more complex. Turbines will experience the influence of the wake of multiple wind turbines. The interaction of these wakes can be modelled...master thesis 2018
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Khan, Muhammad Arsalan (author)Modern wind turbines frequently operate at off-design conditions during their life cycle. They undergo dynamic loads characterized by unsteady aerodynamics. Predicting these unsteady aerodynamic loads has been very difficult due to the non-linear nature of unsteady aerodynamics. Especially when operating near the stall region, these turbine are...master thesis 2018
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Bailleul, Wouter (author)Surrogate models are used to approximate the expensive ‘true’ simulation codes and thus have the potential to speed up the wind farm layout optimisation problem (WFLOP). One technique to make surrogate models is Polynomial Chaos Expansion (PCE). PCE can approximate a (wind farm) model by using orthogonal polynomials which are constructed based...master thesis 2018
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de Martino Norante, Luigi (author)Aerodynamics investigations in speed sports generally consist of measurements of aerodynamic loads through wind tunnel experiments. Lately, a new technique has emerged, known as the Ring of Fire. It is the only drag measurement technique capable of retrieving flow field data on-site, by using Large-Scale PIV. In this Ring-of-Fire project a Low...master thesis 2018
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- Jadeja, Ashutosh (author) master thesis 2018
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Döpke, Max (author)In this research a global-coefficient non-linear eddy viscosity model (NLEVM) is studied. This model stems from the inherent inability of the Boussinesq approximation to model anisotropy and therefore flow features such as: swirl, stream-line curvature and secondary motions (Lumley, 1970; Pope, 1975; Craft et al., 1996). The focus lies on the...master thesis 2018
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Sharma, Saurabh (author)The nuclear technology is changing at a rapid pace driven by the quest for more powerful and safer nuclear power plants, as a consequence several structural components in a reactor are becoming larger and slender while working fluids have higher densities and velocities. These changes can often alter the dynamics of the interaction between the...master thesis 2018
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Giaquinta, Daniele (author)The near wake of the Ahmed reference body in the presence of steady cross-wind is investigated experimentally by means of large-scale three-dimensional Particle Image Velocimetry (PIV). A novel experimental technique is employed which exploits coaxial imaging and illumination while relying on Helium Filled Soap Bubble (HFSB) seeding as well as...master thesis 2018
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van der Arend, Dennis (author)Traditionally a wind turbine’s power curve is used to model the long-term energy yield of the wind turbine and afterwards assess the performance of the turbine (power curve verification). But the current power curve is typically univariate: only dependent on the wind speed and slightly adjusted for site density, turbulence intensity and wind...master thesis 2018
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Rao, Pratik (author)Partial Differential Equations (PDEs) are a fundamental tool in modelling various physical phenomena. The lack of closed form solutions in most cases continues to provide a strong incentive to seek stable and consistent numerical methods. This report deals specifically with the mixed and hybrid nite element formulations; ideas that were...master thesis 2018
Searched for: mods_note_programme_s%3A%22Aerospace%255C%2BEngineering%255C%2B%257C%255C%2BAerodynamics%255C%2Band%255C%2BWind%255C%2BEnergy%22
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