Searched for: mods_note_programme_s%3A%22Aerodynamics%22
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Slangen, R.A.C.M. (author)
Nowadays there is a wide variety of applications for forced transition. They are all based on introducing disturbances to the flow and increasing its momentum thickness. Forced transition or bypass transition as it is also called is used to manipulate the flow by setting the transition point in such a way that the required/better flow situation...
master thesis 2009
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Sinnige, T. (author)
Growing concerns about the environmental impact of aircraft operations and increasing fuel prices have led to the demand for more fuel-efficient aircraft. One of the technologies with the potential to offer a significant reduction in fuel burn is the open rotor engine. However, the noise emissions of such engines are higher than for turbofans,...
master thesis 2013
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Ahlfeld, R.B.H. (author)
Every spacecraft carries small rocket engines called thrusters for the purpose of orbit and position corrections in space. A precise operation of the thrusters saves fuel and a lower fuel consumption can extend the service life of the spacecraft. Precise thrust levels can be better obtained by pulsed firing than by continuous firing of the...
master thesis 2014
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Winkel, R. (author)
An experimental study aimed at the influence of different barrier materials on the energy deposition of nanosecond pulsed dielectric barrier discharge (ns-DBD) plasma actuator was carried out. Additionally, the direct effect of the discharge of an ns-DBD plasma actuator on a low velocity laminar boundary layer was investigated. Three barrier...
master thesis 2015
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Desmedt, S.G.L. (author)
The area of interest for this study is the field of uncertainty quantification in computational fluid dynamics. The goal is to contribute to a new method to perform uncertainty quantification analyses for industrial, computationally expensive CFD simulations. To this end, an adaptive grid refinement method is developed. The existing sparse grid...
master thesis 2015
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Van Dam, E.M. (author)
This thesis experimentally assesses the inflow towards the propulsors and the pressure distribution at the propulsor fan-face for the boundary layer ingesting D8 aircraft, and examines the dependence of the model, the propulsor and the flight condition on the inlet distortion. Use is made of mini-tuft flow visualization and five hole probe...
master thesis 2015
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Cheung, T.M. (author)
With a growing demand for cheap access to space and high-speed flight, hypersonic research is experiencing an unceasing interest from worldwide parties. The vehicles designed for this purpose experience flight conditions where real gas effects caused by dissociation and ionization of the air molecules greatly influence the flow conditions and...
master thesis 2015
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Dhert, T. (author)
Recent improvements in accuracy and effciency of numerical simulation techniques in the field of engineering have led to an increasing interest in applying high-fidelity models for wind turbine design. Computational Fluid Dynamics (CFD) based on Reynolds-Averaged Navier-Stokes (RANS) equations in a co-rotating reference frame has shown promising...
master thesis 2015
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Ter Hofstede, E. (author)
Flow-induced vibration (FIV) plays an important role in the nuclear industry. In nuclear power plants (NPP), the FIV may cause fatigue problems, stress corrosion cracking, possible failure modes and fretting wear. This in return can lead to nuclear safety issues and substantial stand-still costs due to unplanned outages. It is therefore...
master thesis 2015
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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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Sitter, M. (author)
Fluidic oscillators are devices that generate a temporally oscillating jet when supplied with a fluid under pressure. In recent investigations fluidic oscillators have proven to be very efficient in active flow control applications, while only little is known about the internal working mechanism of these devices. This thesis presents the...
master thesis 2015
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Hofkens, A. (author)
In order to extract the body force field that is generated by a plasma actuator from velocity data, most researchers disregard the influence of the pressure gradient to obtain a spatial and temporal description of the body force field. There is however some discussion whether this assumption is valid or not. The current research tries to compute...
master thesis 2016
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Zhang, X. (author)
Air traffic noise, especially during the aircraft take-off and landing, has been universally acknowledged as a nuisance, for which reason, the International Civil Aviation Organization(ICAO) has ratified articles and established specifications aiming at the attenuation of air traffic noise, such as the Annex 16. The implementation of large...
master thesis 2016
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Gheyssens, T. (author)
Due to the awareness of climate change, more sustainable and efficient ways of transport are needed. The most polluting road transport mode in the European Union are the long-haul tractor-trailer combinations. This study will investigate the aerodynamic characteristics of three vehicles in a platoon subjected to cross wind conditions. The effect...
master thesis 2016
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Zhang, Y. (author)
Based on the recently developed mimetic spectral element method, we propose an effective numerical scheme for solving three-dimensional periodic incompressible Euler flows, which spatially preserves mass, kinetic energy and helicity. Preserving multiple integral invariants numerically will significantly contribute to the stability and accuracy...
master thesis 2016
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Van den Broecke, J. (author)
In this work a study was performed on the electrical, fluid-mechanical and net efficiency of nanosecond-pulsed dielectric barrier discharge (ns-DBD) plasma actuators. The plasma actuator efficiency was tested for dielectric barriers with a thickness between 0.5 and 1.5mm and made out of four different materials: Kapton, Lexan, PTFE and silicone...
master thesis 2016
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Kumar, A. (author)
Detailed investigation of factors that influence Wind-Tunnel modeling in vehicle thermal simulation. Tasks involved observing and investigating the additional equipment attached to the wind tunnel model that could alter the results when compared with the computational simulation results. All the study is based on computational simulation finally...
master thesis 2016
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Kessels, P.C.J. (author)
The Reynolds-averaged Navier-Stokes equations are numerically solved in a segregated manner, along with the Spalart-Allmaras turbulence model. The Galerkin as well as multiple stabilized finite element formulations are derived for the Spalart-Allmaras turbulence model, and tested for robustness. For a turbulent channel flow and a backward facing...
master thesis 2016
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Morias, K. (author)
This thesis follows a previous study on the aerodynamic characterization of helium-filled soap bubbles (HFSBs) for large-scale PIV measurements and aims at characterizing statistically the tracing fidelity of HFSBs in PIV experiments, considering the statistical distribution of the bubbles diameter, slip velocity, relaxation time and density....
master thesis 2016
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Hebbare, R.R. (author)
master thesis 2016
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