Searched for: contributor%3A%22Kenjeres%2C+S.+%28mentor%29%22
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Visser, Alje (author)
A phenomenon that compromises the health of city inhabitants is the urban heat island (UHI) effect. This effect is mainly driven by thermal radiation and designates the typically higher air temperature in cities compared to the surrounding rural areas. Over 55% of the world’s population lives in cities, and with this percentage set to rise to...
master thesis 2023
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Groen, Stan (author)
This thesis investigates the behaviour of one-dimensional blood flow in the human arterial tree. It focuses on modeling the change in velocity, cross-sectional area, and concentration. The equations governing this flow are derived using the physical laws of conservation of mass, conservation of momentum, and the<br/>advection-diffusion equation....
bachelor thesis 2023
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Eijsberg, Daan (author)
Fermentation processes are considered to be essential to decrease our reliance on fossil fuel based products. However, the scale-up from lab-scale to industrial-scale has proven to be difficult. Computational Fluid Dynamics (CFD) has the potential to be a tool to optimize the scale-up and to help engineers understand the relevant hydrodynamics...
master thesis 2023
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Kokkedee, Diederik (author)
A one-dimensional model of respiratory deposition is developed based on an Eulerian approach. The model simulates aerosol deposition in all generations of the respiratory tract by numerically solving the aerosol general dynamics equation (GDE) for a range of aerosol diameters. The lung geometry is described by Weibel’s morphometric model, with a...
bachelor thesis 2022
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van Vliet, Christiaan (author)
In this work neural networks are used to approximate the solutions of multiple differential equa- tions. Three main differential equations are investigated: the mass-spring equation, the heat equation and the Navier-Stokes equations coupled with the continuity equation. Each of these equations are approached differently with the current methods,...
bachelor thesis 2021
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Bouma, Jort (author)
In this work we investigate neural networks and subsequently physics-informed neural networks. Physicsinformed neural networks are away to solve physical models that are based on differential equations by using a neural network. The wave equation, Burgers’ equation, Euler’s equation, and the ideal magnetohydrodynamic equations are introduced and...
bachelor thesis 2020
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Nijensteen, Ilse (author)
In this thesis, a model for air flow and temperature in urban areas is studied. In particular, the influence of vegetation in a street canyon is investigated. This includes the effect of vegetation on air flow and the cooling property of vegetation to lower temperature in street canyons. Computational Fluid Dynamics simulations with vegetation...
bachelor thesis 2020
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Braas, Ruben (author)
Knowledge of particle deposition is important in clinical settings or when discussing environmental effects of aerosols on humans.<br/>Particle deposition in the human respiratory tract is determined by breathing patterns and lung morphology, as well as particle properties and deposition mechanisms.<br/>In this study we develop a 1-dimensional...
bachelor thesis 2020
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Hamel, David (author)
In this thesis, the behaviour and application of a one-dimensional model describing blood flow through compliant vessels is investigated. The one-dimensional model is derived using the physical laws of conservation of momentum and conservation of mass and uses a Finite Volume Method in combination with a high resolution flux difference splitting...
bachelor thesis 2020
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Portheine, D.P. (author)
The third biggest cause of death in the western world is the stroke which is often caused by an aneurysm. Recent literature proposes the Wall Shear Stress (WSS), the Time-Averaged Wall Shear Stress (TAWSS), the Oscillatory Shear Index (OSI) and the Transverse WSS (Trans-WSS) as possible factors influencing the initiation, growth and rupture of...
bachelor thesis 2020
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Obiji, Chibuikem (author)
Tata Steel employs physical vapour deposition (PVD) as a novel galvanization technique in their line production to prevent corrosion. In this process, zinc is evaporated in a vapour distribution box (VDB) and directed via nozzles into a vacuum where it is deposited on a steel substrate. In order to reduce stray deposition, achieve high and...
master thesis 2019
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Tierolff, Espen (author)
Currently, 54% of the general population lives in urban areas. This number is estimated to increase to 66% by 2050. Urbanization is generally linked to several phenomena that are detrimental to the overall quality of life; the urban heat island effect, and the decrease of air quality due to pollutants. The addition of vegetation to urban areas...
master thesis 2018
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Roebroeck, Anne (author)
Vapour Distribution Boxes (VDBs) are used for continuous Physical Vapour Deposition (PVD) coating. The present study shows a Computational Fluid Dynamics (CFD) simulation of Zinc vapour inside a VDB, analyses the lateral Zinc vapour distribution and identifies regions in which phase change is likely to happen.
bachelor thesis 2018
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Fagioli, Giorgio (author)
The aortic valve is a valve made of three thin flexible leaflets which open and close in order to allow the unidirectional passage of blood from the left ventricle to the aorta. Because of this repetitive motion at each cycle, the valve is constantly exposed to large variations of pressure and hemodynamic forces. Deterioration in its peculiar...
master thesis 2017
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Muralidharan, Aswin (author)
master thesis 2017
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Blakborn, I.A. (author)
Magnetic Drug Targeting could be used to cure atherosclerosis in the Carotid Artery. The idea of this method is that magnetized drug particles are added to the blood in the artery while applying a magnetic field at the location where the drugs is desired to enter the tissue. Therefore the concentration increases at the location of the...
master thesis 2016
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Filipovic, A.G. (author)
Bachelor project part of the double degree bachelor in mathematics and physics. Calculating the temperature field in the presence of vegetation has many practical applications, such as the study of urban heat islands, but much research still needs to be done in this field of study. The objective of this paper is to describe and test a model,...
bachelor thesis 2016
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Visser, D. (author)
Altered flow and mass transfer patterns are thought to play an important role in the early onset of atherosclerosis. A disturbed wall shear distribution and the prevalence of hypoxic (low oxygen tension) are specifically believed to be atherogenic factors, which can function as a positive feedback on the development of atherosclerosis. In this...
bachelor thesis 2016
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Kortleven, M. (author)
In this research computational fluid dynamics (CFD) is used to model a vertical axis wind turbine. Well known turbulence models | i.e. the k-epsilon and k-omega SST model | are used and compared in their performance against each other and a set of experimental data. The formal research question is "What models are available for the simulation of...
bachelor thesis 2016
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van Zon, M.A. (author)
Bachelor project part of the double degree bachelor in mathematics and physics. Physical phenomena tend to be difficult to simulate using mathematical models. Part of the problem lies in the fact that accurate simulations rely heavily on (limited) computational power. In order to speed up this process, new numerical methods are derived. One of...
bachelor thesis 2016
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