Searched for: mods_note_programme_s:"Aerospace%5C+Engineering%5C+%7C%5C+Aerodynamics%5C+and%5C+Wind%5C+Energy"
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Chuang, Jia Shian (author)
This research aims to develop a method to create a wind farm layout that is robust against the uncertainty source, the inter-year variation of Weibull parameters and wind direction sector probabilities. A wind farm layout optimisation problem under uncertainty corresponds to optimisation under uncertainty (OUU), which is computationally...
master thesis 2020
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van Neerven, Matthijs (author)
In this thesis project, it is investigated to what extent the energy consumption of an electric aircraft can be improved by using a variable pitch and RPM propeller, including energy recuperation during the descent, with respect to a constant pitch propeller. The largest percentage of total mission energy saved using the variable pitch propeller...
master thesis 2020
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Vendrig, Perrin (author)
In this master thesis project the initial steps for the design of a new wind tunnel<br/>for aeroacoustic measurements are made. Well-documented sizing methods for<br/>different wind tunnel parts were found in a literature study and were used<br/>together with 2D CFD simulations to create a new wind tunnel design. Thick<br/>corner vanes were used...
master thesis 2020
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Pusuluri, Abhinand (author)
An effective way to solve the forced Burgers' equation in a variational multiscale framework is to close the system of equations using unresolved-scale interaction terms predicted by an artificial neural network. The goal of this thesis is to investigate the accuracy and stability of the said system by training a neural network offline with data...
master thesis 2020
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Luan, Yuyang (author)
In studies of wind plant designs, wake dynamics are of great interests as wakes affect downstream turbine loading that impacts wind plant efficiency. Recent developments of Tensor Basis Decision Tree (TBDT) based machine learning (ML) models in reconstructing the turbulence anisotropy fields of simple flow cases prompt the motivation in applying...
master thesis 2020
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Deora, Chakshu (author)
Rotors have played a huge role in the history of the aerospace industry. It is being widely used in small scale aircraft, helicopters, ships, wind turbines, to name a few. The study of noise generated by the rotors is an important subject of research. This project aims to characterize the open rotor tonal noise using the experimental and...
master thesis 2019
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Eijkelhof, Dylan (author)
In the present world of conventional wind energy, the National Renewable Energy Laboratory (NREL) 5MW reference wind turbine for offshore system development has become an important piece of the puzzle towards a renewable future based on wind energy. DTU showed the benefit of such a reference model with their 10 MW reference wind turbine and...
master thesis 2019
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Kalyani, Sidharth Krishnan (author)
Future designs of turbofan engines are heading towards High By-Pass Ratios (HBPR) to satisfy the requirements of improving the overall efficiency, but there is an inherent acoustic penalty related to this. An increase in the by-pass ratio imposes structural constraints on the engine leading to a decrease in the axial distance between the rotor...
master thesis 2019
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Langor, Erin (author)
As the penetration of offshore wind farms continues to increase in Western Europe, the North Sea in particular is becoming more densely populated by offshore wind farms. Wind turbine wakes have been a topic of great research in the field of wind energy for some time, however the industry now seeks an understanding of the in- fluence of the wake...
master thesis 2019
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Venkatesh, Vishal (author)
For heavy duty diesel engines, piston temperature control is very important in constructing a successful design that meets the demands of increasing power output and stringent emission regulations. Overheating of piston is avoided with engine oil through spray cooling and gallery cooling processes. In this research project, evolution and...
master thesis 2019
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Liebrand, Rens (author)
Cavitating tip vortices of marine propellers are the main contributors to underwater radiated ship noise due to their dynamic behavior and broadband sound spectrum. Experimentally, it is challenging to get a detailed insight into the vortex structure which makes it difficult to understand the noise generating mechanisms. Although Computational...
master thesis 2019
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Mulder, Boris (author)
Very complex flows can be expensive to compute using current CFD techniques. In this thesis, models based on deep learning were used to replace certain parts of the flow domain, with the objective of replacing well-known regions with simplified models to increase efficiency. To keep the error produced by the deep learning model bounded, a...
master thesis 2019
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Narayan Raichur, Pranav (author)
The longitudinal characteristics of a multi cranked wing in tandem with a canard were investigated on a 2\% scaled generic, modular wind tunnel model in the 2.85m x 2.85m Open Jet Facility (OJF) at Delft University of Technology. The experimental campaign yielded force, moment and surface oil flow data for a moderate angle of attack range of –5...
master thesis 2019
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de Korte, Bart (author)
Within this thesis influence of thrust vectoring for VAWTs, controlling the magnitude and direction of the thrust vector with respect to the freestream, is investigated through active pitch actuation. The H-type Darrieus VAWT is modelled in 2D through the actuator cylinder model with the Mod-Lin correction included. The evaluations are performed...
master thesis 2019
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Derksen, Adriaan (author)
Recent innovations in the off-shore wind industry have lead to bigger wind turbines and taller support structures. These towers can suffer from vortex-induced vibrations (VIV). The present work couples the open-source CFD solver OpenFOAM with a structural solver to investigate these fluid-structure interactions (FSI) effects in more detail. 2D...
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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Patil, Kaustubh (author)
In experimental aerodynamics, pressure is an important parameter which provides insight into the various features of the flow around the test object. By obtaining the surface pressure information, various inferences can be drawn such as flow separation, local flow velocity etc. Traditionally, the most common method of obtaining pressure has been...
master thesis 2019
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Habiboella, Amrien (author)
To increase the total wind farm power output, the wind farm layout needs to be optimized. The power output of a wind turbine depends on the incoming velocity, while the velocity is influenced by the wake of the upstream wind turbines. Wind Farm Layout Optimization (WFLO) problems makes use of the so called low fidelity wake models, which...
master thesis 2019
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Tatomir, Niko (author)
Aeroelastic stability must be maintained for the entire flight duration. Of the vast phenomena that fall under the field of aeroelasticity, flutter is the most studied and influential in terms of driving aircraft design. As such, it is the main topic of analysis of this Master Thesis. For flutter analysis, it is of critical importance to...
master thesis 2019
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De Petter, Christophe (author)
Shock-Wave/Turbulent-Boundary Layer Interactions (SWTBLI) often occur in applications of technological interest. The associated inherent low-frequency unsteadiness dictates the use of Large-Eddy Simulation (LES) approaches to resolve the interaction, which unavoidably implies a very high computational cost. For this reason, no well-resolved long...
master thesis 2019
Searched for: mods_note_programme_s:"Aerospace%5C+Engineering%5C+%7C%5C+Aerodynamics%5C+and%5C+Wind%5C+Energy"
(1 - 20 of 83)

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