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Singh, Sampuran (author)
Small satellites require efficient propulsion systems for attitude and orbit control. This thesis focuses on the development and characterization of two distinct types of micro-resistojet thrusters, namely Vaporizing Liquid Micro-resistojet (VLM) and Low Pressure Micro-resistojet (LPM). Both concepts are developed at TU Delft and are designed to...
master thesis 2023
document
Gabrielse, B.C. (author)
In the automotive industry the development process is driven by a highly competitive market, calling for shorter and more cost-efficient development procedures. Computer aided engineering (CAE) is one possibility to achieve these reductions and becomes an inevitable tool in the development process. However, CAE does not provide the subjective...
master thesis 2017
document
Huijts, Melchior (author)
NOx emissions cause harm to the human body, the world around us and our atmosphere, both directly and indirectly. Flameless combustion is a combustion regime that has the potential to reduce these emissions by more than 95%. Operation in this regime is possible when lowering the availability of oxygen and lowering the combustion temperature in...
master thesis 2018
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Mohan, A. (author)
A previous work at Royal IHC, following the observation from sea trials of trailing suction hopper dredgers (TSHD) that the turning performance of bow tunnel thrusters significantly reduced at slow forward speeds, studied the flow behaviour and performance of bow tunnel thrusters at slow forward speeds using Computational Fluid Dynamics (CFD)....
master thesis 2017
document
Koolstra, Rense (author)
Porous media are used for a wide variation of applications in energy production and storage. One of those applications is the storage of heat which are of great importance in the renewable energy transition. Most literature reported limit itself only to one single thermal conductivity for the porous media. In reality however, the porous media...
master thesis 2020
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Van den Brink, A.J.W. (author)
Introduction Inland and seagoing vessels are equipped with (bow) thrusters. The use of these thrusters can cause scour of the bed alongside a quay wall. In order to assess the consequences of local scour due to bow thrusters on the design of the structure it is desirable to know the dimensions of the scour holes as a function of in time....
master thesis 2014
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Bianchi, Francesco (author)
In this report a master thesis work in support to the development of a water-based Vaporizing Liquid Microthruster (VLM) is presented. This device, which makes use of MEMS technology to offer a very high degree of miniaturization, is an extremely compact thruster which achieves an important performance (Isp > 100 s [64]) while utilizing water...
master thesis 2023
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Coenen, Roger (author)
Airborne Wind Energy is a technology where wind energy is harvested with tethered flying devices. Kitepower uses flexible leading edge inflatable kites, but these have a scaling disadvantage in that they become heavier with size. A single skin kite has the potential of negating this disadvantage while at the same time being more aerodynamically...
master thesis 2018
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Stampoultzoglou, Tasos (author)
For many types of floating structures, roll motion is the most important wave induced motion. More specifically, roll motion is of high significance for barges, in order to correctly predict the acceleration of the structure caused by roll motion and determine the procedure of sea-fastening and off-loading. The correct forecast of roll motion...
master thesis 2017
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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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Aarts, Aukje (author)
During the last decades, the development of high-rise increased quickly. The Eurocode is frequently used to make wind calculations for high-rise structures. To make those calculations, the dynamic wind load is simplified to a conservative equivalent static load. An alternative to calculate wind loads is a physical wind tunnel test. Wind tunnel...
master thesis 2021
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Sala, Arianna (author)
As the need for abundant and reliable renewable energy increases, there is a growing interest in floating wind turbines, which would allow to harness the wind resource in areas where bottom-founded wind turbines cannot be used. However, the movements of the platform are expected to cause unsteady aerodynamics effects, including different wake...
master thesis 2021
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Schouten, T.D. (author)
master thesis 2016
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Jakšić, Luka (author)
In times of rapid urbanization, engineering interventions in coastal systems have become more common. It is important to understand the interplay of these engineered solutions with their natural environment to minimize hazardous side effects to our ecology, economy and coastal safety. In a numerical study by Rijnsburger (2021), a flow...
master thesis 2021
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Tsavlidis, Ioannis (author)
The graduation project was conducted at the upper stage liquid propulsion department of ArianeGroup at the facilities of Airbus DS, Bremen. Based on a series of past flights of Ariane 5 launcher, the aim is to analyze the fluid motion and the pressure fluctuations in the cryogenic propulsion upper stage Liquid Hydrogen (LH...
master thesis 2018
document
Janssen, R.F. (author)
The influence of laminar-turbulent transition on a propeller blade’s performance has been investigated in this study, both numerically and experimentally. The computational fluid dynamics (CFD) is performed using the TAU code developed by the German Aerospace Center, as well as an existing propeller lifting-line code. The laminar-turbulent...
master thesis 2015
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de Jong, Daniëlle (author)
Detached Eddy Simulation is investigated as a potential method to improve the design process in the Aerodynamic Prototype Development Department of Porsche Motorsport. Detached Eddy Simulation is a CFD method that combines the scale resolving capabilities of Large Eddy Simulation with the low cost modelling of the Reynolds-Averaged Navier-Stokes...
master thesis 2019
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Venter, P. (author)
Aero-engine performance is becoming an increasingly regulated aspect in aerospace indus- tries with tighter restrictions on emissions, greater expectations for efficiency and thrust as well as broader requirements for the range of the operating flight envelope. With an increasing consciousness toward these factors during the design of combustors...
master thesis 2015
document
Johri, Kartikay (author)
There is a requirement for localised efficient electricity generation systems that increase the efficiency of power plants and reduce wasted heat from other engineering applications such as cement manufacturing units and brick kilns. Organic Rankine Cycle (ORC) power systems use organic fluids and low-grade heat sources to accomplish this. Lack...
master thesis 2020
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Hu, W. (author)
A wedge oscillating vertically at free surface with frequency ranging from wave frequencies and slamming frequencies has been studied. The focus of this work has been on the gravity effect on the vertical forces acting on the wedge, especially the definition of the limits of gravity-dominant and gravity-negligible conditions and quantification...
master thesis 2015
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