Searched for: subject:"Aerodynamics"
(1 - 20 of 87)

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Leung, K.C. (author)
A low-speed aerodynamic analysis on the conventional NACA ram-air inlet of the Airbus A320 with a new closure flap was conducted. The conventional closure flap mechanism inside the NACA ram-air inlet is replaced by a morphing plate design. Steady-state Reynolds-Averaged Navier-Stokes (RANS) based Computational Fluid Dynamics (CFD) simulations...
master thesis 2020
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Keijer, W.J.T. (author)
The vertical axis wind turbine (VAWT) concept in its current, fixed-pitch iteration is hindered by lower aerodynamic efficiency compared to existing horizontal axis wind turbines. Implementing a form of circulation control on the VAWT by actively pitching the blades throughout the turbine’s rotation could potentially enhance power capture...
master thesis 2020
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Bussemakers, P.J.M. (author)
Climate change, as a result from global warming, requires an energy transition: the reduction of greenhouse gas emissions from fossil fuels and a radical innovation of the global energy system to proceed apace. Offshore wind is an important source of clean, renewable energy, and it plays a key role in the transition. 80% of the worldwide...
master thesis 2020
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Bourget, Grégoire (author)
Initially conceptualised by Benad in 2015 as a highly swept flying wing aircraft to replace the A350-900, the Flying V design has since been refined in several later studies at both Airbus and TU Delft. The initial aerodynamic efficiency gain estimation was refined by Faggiano and Rubio-Pascual, confirming the interest of the solution. To...
master thesis 2020
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Fernandez Barrio, Jorge (author)
A proportionate controller is investigated experimentally for unsteady load alleviation purposes on a 2D wing model with a trailing edge flap. This study is supposed to be a simplified version of a Smart Rotor, a mechanism which deals with the reduction of unsteady loads acting on a wind turbine and aims to understand the behavior of this type...
master thesis 2020
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de Rojas Cordero, Tomás (author)
Experimental aeroelastic data is often needed in order to validate the output of fluid-structure interaction numerical simulations or to gain insight into the physics of a problem without the need of intermediate modelling. Traditional measurement approaches in wind tunnels have relied on the simultaneous use of several measurement systems ...
master thesis 2020
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Mahalingesh, Nikhil (author)
Aerodynamics plays a significant role in the field of cycling as it is the dominant resistive force at racing speeds of 50 km/h. Sporting events involving multiple cyclists leads to aerodynamic interactions between the cyclists and these interactions have been exploited for performance benefits. One such aerodynamic interaction is drafting,...
master thesis 2020
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Boatto, Umberto (author)
Accurate aerodynamic and aeroacoustic simulations of helicopters and wind turbines require the inclusion of the blade elasticity into the computational setup. If low-order aerodynamic models can be efficient for optimization purposes, they are often insufficient in predicting the complex flow phenomena responsible for structural vibrations and...
master thesis 2020
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Hooij, Bart (author)
Indirect adaptive control for the Innovative Control Effectors (ICE) aircraft requires an online aerodynamic model identification strategy to re-estimate the aerodynamic coefficients. Simplotope B-splines in combination with distributed optimization enables for local updates in a global aerodynamic model. This combination reduces the estimation...
master thesis 2020
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Ankith John Santosh, Ankith (author)
In order to meet the growing market demands of quieter, more aerodynamically efficient aircrafts, manufacturers constantly strive to innovate and optimize their designs. Over the years however, the extent of innovation related to the conventional 'tubular fuselage' configurations have somewhat reached a stalemate as the gains obtained have only...
master thesis 2020
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Shubham, Shubham (author)
Noise is a major issue in Urban Air Mobility vehicles, especially due to its operation in the urban environment. One of the major sources of noise is the rotor, and thus, there is a need to optimize the rotor design for aerodynamics and aeroacoustics. A possible technological solution is represented by Co-rotating rotors (i.e., two rotors...
master thesis 2020
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Lu, Willie (author)
This research presents the modelling of struts of a vertical axis wind turbine and its effects on the wake and performance. The 3D non-linear lifting line solver CACTUS is extended to include the struts in the rotor as lifting bodies. A case study is performed for different strut configurations in the rotor, with the focus set on the inclination...
master thesis 2020
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Bunt, Riccardo (author)
During the design and analysis of a mission characterised by re-entry flight, consistent effort and resources are invested in the definition of the aerodynamic database of the re-entry vehicle. An aerodynamic database collects a set of dimensionless coefficients that describe the interaction of the vehicle's geometry and airflow, and an accurate...
master thesis 2019
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MENON, Sachin (author)
Hydrogen is a clean and carbon-free fuel and is considered a key element for the energy transition. Renewable power generation by solar and wind is increasing, requiring flexible operation to balance the load on the energy grid with the ability to rapidly adjust the output. Gas turbines with a combustion system for hydrogen operation offers a...
master thesis 2019
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De Voogt, Francis (author)
Stall is traditionally divided in three types of stall behaviour, these have been regarded as two dimensional and dominated by the airfoil shape. However one of these types of stall behaviour, trailing edge stall, has been shown in literature to be three dimensional by forming stall cells along the wing span. Stall cells are coherent flow...
master thesis 2019
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van Pelt, Pieter (author)
The Kutta condition is a boundary condition applied at a wing’s trailing edge (TE), which enables the calculation of the fluid-dynamic lift produced by a wing in potential flow. This condition is actually a stable equilibrium resulting from a transient flow. The main question of this research is: how is the Kutta condition flow-field created...
master thesis 2019
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Peerlings, Bram (author)
In the highly uncertain environment of conceptual aircraft design and technology assessment and selection, making good decisions is of utmost importance. Aiming to contribute to improving decision quality, the problem was researched from both a technical as well as a socio-psychological perspective. In the technical perspective, the uncertainty...
master thesis 2019
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Ujjaini Kempaiah, Kushal (author)
Reduction of skin-friction drag over a fully developed canonical zero-pressure gradient turbulent boundary layer (ZPGTBL) subjected to spanwise oscillation is measured using planar particle image velocimetry (PIV). The experiments are conducted at Re<sub>θ</sub> of 1000 and 1800, the chosen range of spanwise oscillations amplitude and frequency...
master thesis 2019
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La Porte, Jesse (author)
This thesis investigates the potential of a semi-passive trailing-edge flap on a large conceptual wind turbine. The mechanism passively reacts to blade and tower accelerations by changing the airfoil camber, opposing the dynamic loads on the turbine. An active element is present, which influences the mean of the flap oscillation. First, a low...
master thesis 2019
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Dierickx, Jan (author)
A surrogate model for vortex generator flows has been created. This was done by developing a framework to generate a reduced order approximation of a discrete optimized source-term on a uniform grid. The discrete optimized source term uses the flow field of a vortex generator simulation with a body-fitted mesh (BFM) as objective. The reduced...
master thesis 2019
Searched for: subject:"Aerodynamics"
(1 - 20 of 87)

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