Searched for: contributor:"Hofland, B. (mentor)"
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van der Velden, Marieke (author)
The Engineering Office of the municipality of Amsterdam is developing six man-made islands in the IJmeer. One of the last islands will be Buiteneiland. The location and orientation of Buiteneiland is been agreed when IJburg was designed. The area of interest of this study is the land-water transition at the east side of the island. The IJmeer's...
master thesis 2020
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Paulissen, Sjoerd (author)
Recent research identified a novel scour-enhancing flow mechanism related to 3-D flow behaviour. Under specific conditions, vertical flow separation at the upstream crest of a scour hole can be suppressed as a result of lateral nonuniformities in the main flow. This so-called vertically attached flow state is associated with increased scour...
master thesis 2020
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de Bruijn, Max (author)
Conventional dike reinforcement measures do not take vegetation into account, while vegetation contains wave damping properties. Reasoning for this is that vegetation in general is seen as temporary and hence may be removed in the future. In this case study for the Dutch waterboard WDOD, the wave damping properties of vegetation in a floodplain...
master thesis 2020
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Jantzen, Casper (author)
On the seabed in front of coastal structures sediment movement takes place due to incoming waves. The erosion of sediments creates a scour hole at the toe of structures such as embankments, breakwaters and dikes. This scour hole may lead to instabilities in the main structure due to material sliding into this hole. A common method of protecting...
master thesis 2020
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Helsdingen, Martijn (author)
Vertical sliding valves that are part of a filling and emptying system of a lock are often subjected to an underflow of water during emptying and filling. The flow induces time varying forces on the structure which leads to dynamic behaviour of the valve. Whether the structure is in the range of resonance and what the amplitude of the vibrations...
student report 2020
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Boersma, Floris (author)
This thesis is the third study of a research line that focuses on the interface stability of a rubble mound sand retaining structure. The type of interface considered is a geometrically open granular filter because of its economical and constructional benefits. The stability of an open filter structure in which the base layer is located on top...
master thesis 2020
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Winkel, S. (author)
In the current breakwater design process, not all feasible concepts can be explored due to time constraints. However, designers are also influenced by breakwaters constructed near, or at the same location as their breakwater project. But also conservative assumptions influence the breakwater design process, for instance, regarding the wave...
master thesis 2020
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van Wijland, Bas (author)
Until now, an extensive design method for mild slopes has not been available. The aim of this thesis is to understand the stability of rock on mild slopes under wave attack for impermeable cores in order to optimize designs. Physical model tests have been executed to study this stability for a 1:8 slope. Mossinkoff (2019) executed physical model...
master thesis 2020
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Houtzager, D. (author)
The purpose of this MSc thesis is to do an experimental study into the spatial and temporal variation of rocking armour units. Armour units on a breakwater slope under wave loading can sometimes start to move back and forth, this phenomenon is known as rocking. Rocking can lead to significant impacts between armour units, which can result in...
master thesis 2020
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Brakel, L. (author), Keyzer, L. (author), Hasper, Y. (author), Legêne, M. (author), Willemse, J. (author), van der Stap, E. (author)
This report is the result of a study which aims to understand both the source and severity of flood risk in Cartagena de Indias, Bolívar, Colombia. Solutions to the problem are proposed accordingly. The flood risk is found to be severe and urgent enough to demand action. Currently annual damage and negative impact of inundations are severe...
student report 2017
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Ton, A.M. (author)
The use of the detached offshore submerged breakwater (SBW) for coastal protection has an increasing popularity due to its low aesthetic impact on the natural environment. Submerged breakwaters however have only rarely been adopted and therefore its efficacy remains largely unknown (Ranasinghe et al. 2010). Shoreline erosion has been reported in...
master thesis 2017
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De Leau, J. (author)
An important step in the design process of breakwaters is the laboratorial tests which show the performance of the breakwater. One of the important aspects in the performance is the stability of the armour layer. A common methodology for breakwater testing is a method in which the design wave conditions are simulated in four steps of 1000 or...
master thesis 2017
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Kramer, R. (author)
Momentarily the determination of the static stability of rock on mild slopes can be split in roughly two paths, the empirical and the physical approach. However, both the approaches have their limitations from which one could conclude that neither approach is currently an accurate description of the stability of rock on mild slopes under wave...
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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Korevaar, T.J.A. (author)
Navigation locks are used to transport vessels between waterways with different water levels. In the nearby future many navigation locks will be renovated or replaced. During the design of a new lock still some unknown factors are encountered. One of these factors is the vibration of the valve. The valve is part of the filling and emptying...
master thesis 2016
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Bakker, W. (author)
master thesis 2016
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Janssen, M.P.J. (author)
Although mangrove forests have proven to contribute to wave dissipation significantly, these ecosystem are threatened mainly by the expanding aquaculture. International or nationwide applied greenbelt policies are often used for the preservation of the mangroves and hence the flood hazard reduction, without taking local (hydrodynamic) conditions...
master thesis 2016
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Eikelboom, H. (author)
Water spray is a major contributor to icing of ships and maritime structures. The small size of the droplets in the water spray causes them to easily cool down and freeze to the different structures. Icing can hamper operations on both ships and other maritime structures due to blockage of equipment and slippery deck areas. Besides, if icing...
master thesis 2016
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Okumura, N. (author)
Five years ago, the Great Eastern Japan tsunami devastated a large part of Tohoku area (Northeastern Japan), and since then, other coastal areas in Japan have feared the possibility of such a large tsunami. This challenge of reducing flood vulnerability of coastal areas due to tsunamis has been discussed with high importance amongst the...
master thesis 2016
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Le, T.N. (author)
Prototype single layer armour units on a breakwater slope are observed to break. To predict when breakage occurs, the objective of this research project is to obtain knowledge on, and measurements of the rocking behaviour and failure mode of single layer armour units. A single cube on a breakwater slope is subjected to investigations. An...
master thesis 2016
Searched for: contributor:"Hofland, B. (mentor)"
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