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Shreedharan, V.A. (author)Extraction of hydrocarbons from the sub-surface is becoming harder with the reservoirs getting smaller and the formations increasingly tighter. Considering the current circumstances, production enhancement otherwise known as “stimulation” techniques, play a vital role in ensuring economic returns from a hydrocarbon reservoir. The use of water...master thesis 2015
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Van Kruchten, T.J.G. (author)An abdominal aortic aneurysm (AAA) is an excessive localized swelling of the abdominal aortic wall. AAAs are often lethal when they rupture and constitute a significant health risk in the developed countries. CFD simulations can help predict formation, progression, and rupture of AAAs by the use of hemodynamic parameters such as the Oscillatory...master thesis 2015
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Rotte, G.M. (author)Predicting the equilibrium between a ship’s required thrust and resistance is a complicated problem. Shipyards have to pay big penalties when a ship does not run at its design speed at a specified required power. An accurate prediction of the ship’s self-propulsion point is thus of huge importance. In the determination of the self-propulsion...master thesis 2015
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Srisankar, V.B. (author)One of the major restrictions that hinder the versatility of electrical machines in any sector is their thermal limitations. This thesis deals with the study of the heat transfer occurring in an outer rotor permanent magnet synchronous machine used in the electric vehicle industry with the aim of exploring possibilities to reduce the hotspot...master thesis 2015
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Settels, J.W. (author)With the fluctuating fuel oil prices and increasing environmental awareness more and more attention is given to durable ways of shipping cargo around the world. Reducing fuel consumption by using wind as a source of auxiliary propulsion is one way to achieve that goals. Different projects utilising Wind Assisted Ship Propulsion (WASP) have been...master thesis 2015
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Van Kampen, M.J. (author)As hydrocarbon supplies dwindle, technology develops and long-term hydrocarbon prices rise it is becoming more and more economical to develop hydrocarbon fields offshore. An FPSO vessel can be favored as it is flexible, quickly commissioned and cost-effective, be used at all water depths and does not require additional pipelines to shore. To...master thesis 2015
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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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Pavlioglou, S. (author)The rudder-propeller, as the azimuthing thruster was originally called, can be rotated 360 degrees and is capable of delivering full propulsive power in any direction. The azimuthing thruster makes use of a mechanical transmission in order to deliver the power from the prime mover to the propeller. The good maneuverability and the absence of a...master thesis 2015
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- Crepain, T.P. (author) master thesis 2015
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Van Twillert, M.J. (author)This report describes two methods to analyse the effect of sloshing on ship motions. The first method applies linear potential theory on both the barge and the internal tanks. For the barge the radiation, diffraction and incoming wave potentials are solved. For the internal tanks only the radiation potential is calculated, as there are obviously...master thesis 2015
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Saleh, K. (author)One of the major problems associated with oil and gas production is the large volume of produced water. Operators around the world are facing significant costs with the treatment and disposal of produced water. Downhole separation, a relatively new technique, has been developed to reduce the costs of produced water and increase oil production....master thesis 2015
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Van Oostrom, J. (author)In a previous study, the optimal re-entry trajectory of Hyperion-2 has been derived. The mission of the vehicle is to measure hypersonic boundary-layer transition, a phenomena in which the laminar boundary layer turns into a turbulent boundary layer. This is an important feature in hypersonic flow to investigate, as it introduces peak heating...master thesis 2015
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Manickathan, L. (author)The wake geometry of a Vertical Axis Wind Turbine (VAWT) is unlike the standard Horizontal Axis Wind Turbine (HAWT). The blades of the turbine continuously passes through its own wake, creating complex wake-body interactions such as flow separation and dynamic stall, and convectional grid-based numerical method which is capable of describing...master thesis 2014
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Wong, Y.C. (author)A car in an open car park is on fire. The fire and the smoke unleash a heat that causes the temperature to rise. The open car park is made out of a steel frame and to be designed for a fire resistance of 60 minutes. This car fire is a local fire whereas flashover doesn’t occur. The crucial point of the fire is when the steel frame reaches the...master thesis 2014
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Kapoor, P. (author)Centrifugal compressors form an integral part of automotive turbochargers. Strict emission regulations and increased engine downsizing in the automotive industry are pushing the turbocharger centrifugal compressors to provide the charged air at very lower mass flow rates. However, at low mass flow rates, the operation and application of...master thesis 2014
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Ras, T.T. (author)A research on finding a method to integrate the wind engineering process to the design process. Wind engineering is seen to be a rigid and slow process of CFD modeling and wind tunnel testing. New frames of work and data analysis make it possible to integrate this process in the, much faster, design process. Proof of this integration is given in...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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De Jong, J. (author)Introduction Bow thrusters are of great help for the navigation at quay walls, but the high and turbulent velocities can result in a bed load exceeding the strength of the bed or bed protection. To be able to design a stable bed the velocities at the bed need to be accurately determined. In design practise the velocities generated by a propeller...master thesis 2014
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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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Saud Afzal, M. (author)The sediment transport module of REEF3D is used to calculate the scour and the deposition pattern for abutment, pier and contraction under constant discharge and for pier under waves. The time development of scour for all these cases is also observed. To this effect, the Reynolds-Averaged Navier Stokes (RANS) equations are solved in all three...master thesis 2013