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Pinto, Martino (author)Particle Tracking Velocimetry (PTV) is an effective and non-intrusive flow measurement technique that is able to provide quantitative information of the full velocity field at a certain instant in time, by tracking each particle individually with high-speed cameras. This permits to have a very high precision in measuring the flow evolutions. The...master thesis 2024
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- Albers, Wessel (author), Arends, Jorick (author), van Battum, Bram (author), Hadzhiyski, Erin (author), Karaca, Can (author), Keijzer, Damien (author), Middendorp, Lizzy (author), de Rijke, Steven (author), Sarıgöl, Barkin (author), Simon Soria, Carmelo (author) bachelor thesis 2023
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Klappe, Josée (author)Understanding and predicting vortex behavior is crucial to maximize performance using aerodynamic design. Vortex breakdown can be induced to benefit the flow field or has to be prevented to avoid losing performance. It is therefore important to study the dynamics of vortex breakdown.<br/><br/>The main objective of this thesis was to assess the...master thesis 2023
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- Van den Berghe, Korneel (author), Evers, Tobias (author), Hagman, Ronald (author), Koelemaij, Stijn (author), Krochak, Alex (author), de Koning, Ole (author), Lubout, Mitchell (author), Valk, Jonatan (author), Vaidya, Omkar (author), van Zyl, Jonathan van Zyl (author) bachelor thesis 2022
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de Reijer, Tim (author)The available energy density supplied by conventional light sources prohibits the use of time-resolved volumetric Particle Image Velocimetry (PIV) with submillimetre helium-filled soap bubbles (HFSB) on a cubic metre scale. In connection with attempts to expand the maximum attainable measurement domain of PIV, a research project is carried out...master thesis 2021
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Bermel, Leon (author)Turbulent boundary layers are responsible for up to 89 % of the skin friction drag of civil aircraft. This shows that in regard to the current social sensitivity towards climate friendly aviation a reduction of tur- bulent skin friction could have a large impact. On the one side greenhouse gas emissions by aviation could be reduced and on the...master thesis 2020
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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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Saredi, Edoardo (author)Car industry and motorsport development nowadays strongly rely on wind tunnel testing. As the literature survey shows, in order to fully understand the characteristics of the flow around a car, large-scale and volumetric flow field measurements are required. For its features, PIV can be pointed as a useful technique for automotive wind tunnels....master thesis 2018
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Singh, P. (author)Tomographic PIV is one of the most recent and advanced tools used in experimental fluid dynamics. Low spatial resolution is currently a problem in large scale tomo-PIV as concentration. A novel technique is proposed which leverages the temporal information of full Lagrangian particle tracks to improve the spatial resolution of tomo-PIV in low...master thesis 2016
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Shah, J. (author)Aircraft noise has come under severe scrutiny due to growing number of airports and airline operations. The noise generated by high lift devices is now comparable to the turbofan engines due to increasing bypass ratios. A Gurney flap is a suitable starting point to study trailing edge flap aeroacoustics due to additional lift characteristics and...master thesis 2015
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Rafati, S. (author)Step cylinders have numerous applications, for instance, radio communication towers, airport control-towers, antenna members, etc. Numerous applications motivate researchers to investigate this bluff body both numerically and experimentally. The single step cylinder model is comprised of a small-diameter cylinder (d) attached coaxially to a...master thesis 2014
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Schneiders, J.F.G. (author)Measurement rate limitations of time-resolved 3D-3C velocity measurements by tomographic PIV limit application of the technique to small measurement volumes and low speed flows (~10 m/s). To reduce the challenging repetition rate requirements historically set by the Nyquist criterion, in the present thesis work a novel method is proposed,...master thesis 2014
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Swathi Badala Krishna, Swathi (author)Impinging jets are relevant ow configurations in many technological developments. For example, on some short take-off and landing aircraft the high speed exhaust from the jet engine is deflected by direct impingement on the aps to create extra lift during take-off. Fatigue due to excessive dynamic loading on the aps and high levels of noise...master thesis 2012
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Pröbsting, S. (author)In the past, different modifications of trailing-edges have been investigated with the aim to reduce noise emissions. One promising solution, which has been shown to reduce the intensity of trailing-edge noise, is the application of so-called sawtooth serrations with different proportions and sizes. Current research aims at applying new tools of...master thesis 2011
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Nati, Andrea (author)In the last years the interest in small unmanned air vehicles (UAVs) has increased. Due to technological improvements, miniaturisation of UAVs is possible in different type of aerial vehicles, varying from airplanes to helicopters. Different from airplanes, helicopters have continuous airfoil motion, which introduces aerodynamic complications,...master thesis 2010
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Vercruyssen, T.G.A. (author)In the world of underwater measurements and inspections there is a large demand for autonomous underwater vehicles(AUV) to decrease the cost and dangers involved in such operations. Small and low cost AUV can operate in many fields including hydrography, marine geology, coastal engineering and marine biology (habitat mapping). A concrete example...master thesis 2010
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Shukla, R.H. (author)The high speed flows with mach number above 5 are generally categorised as hypersonic flows. In order to generate hypersonic flows in wind tunnel for aerothermodynamic testing, a shock tube type setting is generally known as one of the most commonly used methods. Similarly Hypersonic test facility at TUDelft (HTFD) is a Ludwieg tube type wind...master thesis 2010
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Parkhi, D. (author)The flow past open cavities is a problem that is encountered in many engineering applications and can result in intense acoustic tones. The flow physics and acoustics of cavity configurations are complex and both computational and experimental techniques are being developed to provide an opportunity to gain further understanding and provide a...master thesis 2009
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Jöbsis, A.J.P. (author)The interaction between a shock wave and a turbulent boundary layer (SWBLI) is a phenomenon encountered in compressible fluid dynamics that is of particular relevance to high speed flight. In transonic and supersonic flight the SWBLI is present on different parts of an airplane. Often the interaction involves local separation of the boundary...master thesis 2009
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Boon, P.M. (author)Today, the impact on the environment of too much fuel consumption becomes clearer and clearer: the earth is heating up, poles are melting and sea levels are rising. Aircraft contribute a lot to this. By reducing aircraft drag, fuel consumption and pollution can be decreased dramatically. Aircraft encounter different types of drag, but viscous...master thesis 2009
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