Semi-infinite laguerre functions for wind turbine wake modeling

With an increased demand for renewable energy wind farms, their efficiency receives growing attention from both the industry and academics. Mitigating wake interaction effects in wind farms is one of the ways wind farms could increase their efficiency. Control techniques to increase wake reenergizing are currently under development, however, are...

Optimising storage assignment, order picker routing, and order batching for an e-grocery fulfilment centre: An exact and heuristic approach

With (e-)grocery retailers striving to increase their efficiency and subsequently reduce their costs, the opportunities that lie in optimising the order picking process of the supply chain is of key importance. The complex nature of assigning articles to an optimal storage location, having efficient routing of order pickers, and optimised...

Vortex-Induced Vibrations of In-Line Cantilevered Cylinders: A Numerical Investigation for Nuclear Industry Benchmark Testing

The advent of global warming has brought an increased interest in non-conventional sources of energy, one of which is nuclear energy. Threatening the almost year-round functioning of nuclear power plants are Flow-Induced Vibrations (FIV). One such mechanism, Vortex-Induced Vibration (VIV), holds importance in areas of cross flow in nuclear power...

A practical quantum algorithm for solving structural optimization problems: a proof-of-concept!

The aerospace engineering industry is continuously striving for faster methods to solve and optimize engineering and research problems with a higher degree of accuracy. It is therefore relevant to investigate possibilities that are expected to accelerate computational speed, such as quantum computing. For this reason, the objective of this...

High-Order Discretization of Hyperbolic Equations: Characterization of an Isogeometric Discontinuous Galerkin Method

Computational fluid dynamics is nowadays one of the pillars of modern aircraft design, just as impor­tant as experimental wind tunnel testing. Very ambitious goals in regards to performance, efficiency and sustainability are being asked of the aviation industry, the kind that warrant a virtual exploration of the edges of the flight envelope....

Aerodynamic Effects of the Flow Field in a Vehicle Rear Wheel Arch and its Effect on the Driving Resistance

The increasing importance of climate change and stricter regulations for greenhouse gas emissions raise the pressure on the automotive industry to develop more efficient products. Besides a reduction of emissions by new combustion engines, electric vehicles are being introduced to lower the fleet fuel economy. Especially this new drivetrain...

Finite volume method for modelling of linear elastic deformation: Extension to three dimensions and comparison with finite element method

The demand for accurate and efficient simulations in order to test the geomechanical effects is a reality for the entire geoscience community. The motivation that arises from that need is the development and the evolution of modelling methods to study these effects. Deep understanding of any problem in fine scale is crucial, especially when it...

Free Water in Helicopter Fuel Tanks: A Computational Prediction Study

Water accumulating in the fuel tanks of any aircraft presents an unacceptable safety hazard. This accumulation, which is due to a combination of physical phenomena, is difficult to assess and therefore not well known. The purpose of this project is the development of a lightweight computational prediction method for water accumulation in...

Numerical simulation of a cavitating line vortex in a converging-diverging nozzle: using RANS and SRS methods

Tip vortex cavitation was previously identified as a source of the broadband noise emitted by ships underwater. This leads to unwanted noise and vibrations on board, which reduces passenger comfort, and increases the underwater signature of naval ships. The influence of different cavitation regimes on propellers and boundary layer transition on...

Genesis of the Kutta condition: An empirical study of the transient flow which produces the Kutta-condition flow-field

The Kutta condition is a boundary condition applied at a wing’s trailing edge (TE), which enables the calculation of the fluid-dynamic lift produced by a wing in potential flow. This condition is actually a stable equilibrium resulting from a transient flow. The main question of this research is: how is the Kutta condition flow-field created...

Performance investigation of VentiFoil ship propulsion: Research into the propulsive performance of VentiFoils using CFD simulations

In recent years the awareness and the effort to reduce air pollution and global warming have increased. Many new ideas are being developed to reduce harmful emissions. Despite this, the shipping industry is still a large contributor to air pollution worldwide. To reduce the environmental impact of shipping, the use of<br/>sustainable energy...

Chemical Reactor Network for LDI Combustor: CRN development and Analysis of Different Fuels

Prediction of emissions from combustion systems is a complex problem involving the coupling between the flow field and chemistry. CFD analysis is the most commonly employed approach. However, it has the drawback that a very high computational cost prevents the use of detailed chemistry models. This master thesis, which focuses on NOx emissions,...

Modeling of the exhaust plume of a submerged exhaust system: A numerical analysis of a submarine exhaust

The Royal Netherlands Navy (RNN) operates four diesel-electric submarines, the Walrus class. The submarines sail submerged on electric engines and periodically recharge the batteries with diesel engines at periscope depth. The exhaust gases are dispelled at the back of the sail below water level. During the sea trials it was observed that the...

Comparative study of wind gusts: detection techniques and terrain specific features

In this research work, the phenomenon of extreme wind events or gusts has been studied in detail and different aspects related to the nature of gusts are explored.<br/>In order to detect wind gusts from a stochastic time series different gust detection techniques collected from previous research works and literature studies were compiled,...