Searched for: subject:"Particle%5C+Image%5C+Velocimetry"
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Versluis, Barry (author)
Many laboratory tests of samples where the rock fractures are based on<br/>meso-scale (cm) characterization of effective ‘intact’ strength parameters neglecting the microstructure effects. Understanding fracturing processes at<br/>micro-scale (mm) will require models with microstructure data. However,<br/>data is lacking on micro-scale.<br/...
bachelor thesis 2020
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Mitrotta, Francesco (author)
The reduction of atmospheric pollutants emission is one of the biggest challenges of modern aeronautical industry. This is testified by the commitment of international institutions such as the European Commission, with its \textit{Flightpath 2050} document issued in 2011, and by research organization such as NASA, with its \textit{Fixed Wing}...
master thesis 2020
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Camps Pons, Carlos (author)
Transonic buffet is an aerodynamic instability that appears on aerofoils and wings at certain combinations of Mach number and angle of attack, and which limits the aircraft flight envelope. This thesis project presents an experimental<br/>investigation of buffet employing stereoscopic PIV and Background Oriented Schlieren. By using four...
master thesis 2019
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De Geyndt, Wouter (author)
With growing interest in wet adhesion, animals such as tree frogs are often used as paradigm for creating grippers in wet environments. Tree frogs are capable of attaching to surfaces under several conditions (smooth, rough, dry, wet, and flooded) due to the microstructure of their toe pads. This microstructure consists of pillar-shaped...
master thesis 2019
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van Haren, Eduard (author)
The turbulent lifted Dutch natural gas jet diffusion flame in cold co-flowing air is widely used in gas turbine operation and subject of the current investigation. In striving to clean and sustainable combustion, adding hydrogen to the Dutch natural gas (DNG) fuel and CO2 in the coflow is promising. Objective of this investigation is to study...
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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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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Koradiya, Jaydeep (author)
Cylinder flow has been extensively studied for decades due to its numerous direct and indirect relevance to the real-life applications. Being a bluff body, the cylinder experiences flow separation with large wake leading to significant drag force thus the drag reduction on the cylinder is sought. In the long-running history of cylinder flow,...
master thesis 2018
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Vijayaragavan, Naren Balaji (author)
Rowing is a competitive sport where victory is determined by fine margins. In the past, the focus has been on optimizing the shell. Due to the increasing regulations placed on the shell design, the scope for manoeuvring in this area is greatly limited. This increases the necessity to focus on the less explored option of propulsion in rowing. The...
master thesis 2018
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van Loon, Orin (author)
This study treats the calculation of longitudinal forces on a ship in a lock chamber due to the levelling procedure. The focus will be on the force resulting from the filling jet through the levelling door in the lock, with the main point of interest being the interaction between the ship and the flow resulting from the jet. To understand more...
master thesis 2017
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Dash, Amitosh (author)
People living or working close to the highways are at risk to higher exposure levels of different air pollutants, one of which is particulate matter. The Antea group has recently proposed the addition of Electrostatic Precipitators (or ESPs) on the top of sound barriers adjacent to highways, in order to capture the particulate matter and safely...
master thesis 2017
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Jux, Constantin (author)
Aerodynamics research and development often involves large-scale and turbulent flows; may this be a rotor flow, the wake of a car, or the flow passing a human athlete to name a few examples. Volumetric particle image velocimetry (PIV) is well suited for the study of such flows. The introduction of Helium Filled Soap Bubbles (HFSB) for wind...
master thesis 2017
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Yuvaraj, R. (author)
This thesis work illustrates the first of its kind solution to this problem of lack of seeding at vortex core in air flows, by the use of Helium Filled Soap Bubble (HFSB) which is a neutrally buoyant tracer particle in air flows. To analyse the lack of seeding in the vortex core, a 2D numerical simulation of particle motion in vortex flow is...
master thesis 2016
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Kislaya, A. (author)
In PIV, the systematic tendency of the measured sub-pixel displacement to be biased towards the integral pixel values is called peak-locking. This occurs when the particle image diameter is less than a pixel. The bias error causes inaccuracy in the measured PIV data which does not reduces with increase in the sample size. Recently developed...
master thesis 2016
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Pozo Andrade, C.E. (author)
The increase in complexity of geotechnical problems demanded for more advanced physical modelling and instrumentation approaches. Physical modelling under normal gravity (1g) or in centrifuge has been an important instrument to overcome various scale issues that govern soil related experiments. However, limitations in the size, especially for...
master thesis 2016
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Hartuç, T. (author)
In this thesis both Wake Ingestion (WI) and Boundary Layer Ingestion (BLI) configurations have been investigated and analyzed with respect to their application to aircraft design. WI and BLI in the context used here means positioning the engine such that it ingests boundary layer fluid for the purpose of saving shaft-power. This research...
master thesis 2015
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Pancham, A.K. (author)
Tonal noise and mechanical vibrations appear in flexible risers by throughput of dry gas flow. In this master thesis the effect of adding liquid to the fluid stream in the flexible risers is investigated, as this would possibly reduce the tonal noise and mechanical vibrations. Since flexible risers are a concatenation of cavity-like structures,...
master thesis 2014
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Anantharaman, V. (author)
Orifice plates are key components used for flow measurement and control in several industries. For instance, they find applications in gas and liquid circuits of lithography machines, nuclear power plants and aerospace propulsion systems. They are used typically either for measuring flow-rate or to introduce a pressure drop for purposes of flow...
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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Shawaz, S. (author)
This project aim to determine the macro streaming, the heat input and crystal nucleation induced by ultrasonic irradiation of a vessel containing solutions at different power input and irradiation time. First, experimental determination of the mixing induced by the ultrasound irradiation at different power input was studied using a high speed,...
master thesis 2012
Searched for: subject:"Particle%5C+Image%5C+Velocimetry"
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