Searched for: year%3A2016+department%3A%22hydraulic%22
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Eisses, D.A. (author)
Fixed steel structures in the North Sea that are approaching end of life are increasing in mass and dimensions, this imposes challenges on the current decommissioning strategies. The main challenges arise during removal of the barge-launched substructures. In contrast to the topsides of these large structures the substructures cannot be easily...
master thesis 2016
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Horsten, B.P.M. (author)
The inundation height of the Tohoku tsunami of 2011 exceeded the design levels of many coastal barriers and several structures collapsed. Hundreds of seawalls and breakers are (planned to be) (re)built in the Tohoku district. There is much debate about the conventional tsunami walls and it is therefore suggested to consider alternative tsunami...
master thesis 2016
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Hellinga, L.B. (author)
Breakwaters with single layer concrete armour are very commonly applied nowadays. Much research is available on the stability of single layer armour units on the seaward slope. However, rear slopes design methods for single layer armour units are rare. On rear side slopes usually similar sized units as on the seaward slope are applied. Limited...
master thesis 2016
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Schoemaker, M.A. (author)
The Hollandsche IJssel is a river between Rotterdam and Gouda and is protected from the main river system in the Netherlands by a storm surge barrier. The Hollandsche IJssel experiences several problems: the storm surge barrier dates from 1958 and has a relatively low closure reliability; three quarters of the dikes have been rejected according...
master thesis 2016
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Hendriks, H.C.M. (author)
A demand to use mud as fill material for land reclamations has emerged over the past years. Such reclamations start with pumping a muddy suspension into an area enclosed by dikes. The particles in suspension then settle to form a mud layer, so that the supernatant can be removed. This filling process may be repeated several times to completely...
master thesis 2016
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Songy, G. (author)
In this study, a numerical model (XBeach-vegetation) and statistical Bayesian Network (Netica) was developed for the simulation and quantification of wave attenuation for various combinations of global salt marsh characteristics and extreme hydraulic conditions. The purpose of this modeling effort was to test the ability of the numerical model...
master thesis 2016
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Das, N. (author)
In 2002, several mooring chains of Girassol Off-loading buoy which was installed offshore Angola ruptured just after 8 months of service. A new failure mechanism called out-of plane bending(OPB) fatigue in mooring chain links was identified in addition to tension induced fatigue after a series of experiments. Currently, there are no models in...
master thesis 2016
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Vos, G.J. (author)
Many breakwater projects start with the selection phase which consists of the consideration of alternatives. These breakwaters are required to protect ports, banks and habitat areas from significant wave action. Moreover, upcoming Design & Construct contracts drive contractors to perform the consideration of alternatives and design themselves....
master thesis 2016
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van Steensel, C.P. (author)
master thesis 2016
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van Druten, E.J. (author)
Uncertainties about climate change and the energy market constitute a major challenge in designing a pumping station. To tackle this challenge, a robust design is needed, that performs satisfactory under a wide variety of future conditions. Multi-Objective Robust Simulation Optimization (MORSO) was applied, to create a robust re-design for...
master thesis 2016
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Hanssen, J.L.J. (author)
To date there is limited knowledge about the flow behaviour of non-Newtonian slurry and tailings flows. In hydraulic engineering and the mining industry numerous questions and uncertainties still exist. Different numerical and analytical models have been developed attempting to meet this demand. For the larger part they describe the rheological...
master thesis 2016
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Huisman, M. (author)
The Smit sawing wire system was used in the salvage operation of the Baltic Ace. The sawing wire was drilled underneath the wreck and connected to two barges on opposite sides. Winches were placed on the barges to make a controlled cut through the wreck by pulling the sawing wire back and forth. The cut was made in an upward direction. While the...
master thesis 2016
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van Rooijen, E.J. (author)
Confluences are special, complex elements within river systems which have been subject of much research. However, little attention has been given to the effects of density differences in confluences. The aim of this research is to see when and how density differences are important in confluences with respect to other occurring flow structures....
master thesis 2016
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Van Engelen, T.E. (author)
Coastal inundation models are benefited by timeliness of the predictions, not only when it comes to real-time forecasting but also considering risk assessment studies and sensitivity analysis. Numerical models however are often subjected to a trade-off between accuracy and efficiency, especially when dealing with large geographic scales. In this...
master thesis 2016
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Amellonado, A. (author)
Mobile jack-up units remain favourable in the offshore industry due to its capability to self-install and ability to work in moderate water depth. Prior to its mobilization to the site location, it is required to have a site-specific assessment (SSA). The SSA will identify any potential problems related to foundation conditions during...
master thesis 2016
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Postma, M.G. (author)
This study describes the stability of rock on a mild slope (e.g. milder than 1:6) under wave loading. This is done because an increasing number of situations occur where mild foreshores are protected from the wave and currents. The empirical stability formula, designed by VAN DER MEER [1988], is not valid for these kind of slopes. Nonetheless,...
master thesis 2016
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Everts, P.S. (author)
All over the world rubble mound breakwaters are built to protect harbours, shorelines, and other vulnerable coastal areas against wave action and currents. Most of the designs for these structures use so called deterministic or semi-probabilistic design methods (level I). With these methods insight in the uncertainties, and consequently the...
master thesis 2016
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De Wit, F.P. (author)
Alongshore currents are currents parallel to the coastline. In coastal areas they are driven by a combination of wave and tidal forcing. In this study, the validity of the non-hydrostatic, wave-flow model SWASH to predict these currents is investigated. This is done by comparing model predictions with measurement observations. Observations were...
master thesis 2016
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Steenbergen, C.T.J.D.M. (author)
Sheet pile walls are increasingly applied in the Netherlands to reinforce dikes. Up to now it is not known what is the real strength and stiffness behaviour of this sheet pile walls and when the dike with the construction can be considered to have failed. Nowadays an elastic design is applied for reinforcements with sheet pile walls, while for...
master thesis 2016
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De Haan, F.S. (author)
As a consequence of extracting gas from gas fields in the subsoil of the Groningen province during the last decades, seismic activity is increasingly encountered. As The Netherlands is not located in a seismic active area, dynamic loads due to earthquakes historically are not taken into account in structural design. The dynamic loads from...
master thesis 2016
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