Searched for: contributor:"Verheij, H.J. (mentor)"
(1 - 20 of 28)

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De Vries, J.F. (author)
In scheepvaartkanalen worden er steeds meer natuurvriendelijke oevers aangelegd. Dit zijn oevers die bestaan uit een vooroever en een daarachter gelegen natte strook of plasberm. In de vooroever zitten openingen die dienen om vers water vanuit het kanaal naar de natte strook te laten stromen om ongewenste effecten van stilstaand water te...
master thesis 1998
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De Gunst, M. (author)
Het onderwerp van deze studie is een niet-uniforme stroming waarin sprake is van een plaatselijk verhoogde aanval op het bodemmateriaal door de lokaal hogere turbulentie. In een 15 m lange stroomgoot met een breedte van 40 cm is door middel van een backward-facing step ofwel afstap een niet-uniforme stroming gecreeerd. Om de schade aan de...
master thesis 1999
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Kapinga, H.S.O. (author)
master thesis 2003
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Valk, A. (author)
The safety of a large part of the Netherlands depends on sea dikes. Due to climate change, a sea level rise is predicted. Together with stronger storms and more wave attack, wave overtopping on the current dikes will increase. As a response, crest levels of the dikes need to be raised in order to meet the present regulations for wave overtopping...
master thesis 2009
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Knaack, W. (author)
Een onderzoek naar de morfologische veranderingen in het Friesche Zeegat. Na de afsluiting van de Lauwerszee is het bekken continu in verandering. Dit heeft gevolgen voor de bevaarbaarheid van de vaarroute naar Schiermonnikoog. In dit onderzoek wordt een voorspelling gedaan naar de ontwikkelingen voor het komend decennium en de gevolgen van deze...
master thesis 2009
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Lievense, L. (author)
New Profile for the Amsterdam-Rhinecanal The aim of this thesis is to design a new profile for the Amsterdam-Rhine canal. The new profile needs to be well navigable and requires to have stable bank constructions. Simultaneously several social aspects have to be taken into consideration. The assignment is summarized as follows: Design a new...
master thesis 2010
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IJsebaert, T. (author)
During the execution of reclamation projects by Boskalis, often a temporary work channel and basin are required. This work channel is used by the dredging equipment to reach the project site as close as possible. The project site is often located in very shallow water which makes a channel necessary. The basin is used to transport the dredged...
master thesis 2010
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Lenselink, R.J. (author)
An explorative study to investigate flow velocities and sediment transport caused by the passage of a barge train over a small sandy shoal.
master thesis 2011
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Manaois, J.R.C. (author)
Bigger ships are replacing the small ships, also at the Amsterdam-Rijnkanaal. A direct consequence is the use of larger main propellers and increased installed engine power in order to realize acceptable ship speeds. To improve the maneuverability, the power of auxiliary bow and stern propulsion systems has increased as well. This results in...
master thesis 2011
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Kéri, B. (author)
The study deals with the investigation of flow structures in groyne fields interacting with the flow generated by navigation. Groynes are traditionally constructed to ensure adequate water depth for navigation, so the interaction of navigation and groyne fields is nearly guaranteed. The Hungarian Danube section – which is part of the 7th...
master thesis 2012
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Van Velzen, G. (author)
This research focuses on the behaviour of a granular scour protection around piles when the bed is subjected to bed degradation. Furthermore, engineering guidelines are provided to account for bed degradation in the design of the initial scour protection. To address the behaviour of the protection, a physical model is used and to obtain the...
master thesis 2012
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Van Doorn, R. (author)
Research into hydraulic loads by a bow thruster. The hydraulic loads on the slope at an open quay construction on piles is investigated. The propeller (bow thruster) jet induces hydraulic loads on the bed, which could result in scour holes and damage to the quay construction. Performed scale model tests provide details about the hydraulic loads...
master thesis 2012
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Van de Sande, S.A.H. (author)
Granular filters are used for protection against scour and erosion. For a proper functioning it is necessary that interfaces between the filter structure, the subsoil and the water flowing above the filter structure are stable. Stability means that there is no transport of subsoil material through the filter to the water above the filter, and...
master thesis 2012
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Kalf, P.N.M. (author)
This research focusses on the behaviour of fine particles which pass through the armour layer of bed material of the upper and middle reaches of a river. When the fine particles are entrained in the armour layer, it is described as ‘winnowing’ or vertical entrainment. A river bed generally consists of a coarse surface layer, which is the...
master thesis 2013
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Pijpers, R. (author)
Hardly any flood defence system is a continuous dike system, since it is often interrupted by non-water retaining structures, as for example stairs, buildings, roads, fences and trees. Also larger hydraulic structures as floodgates and sluices are sometimes situated in the dike alignment. The transition between these different objects and the...
master thesis 2013
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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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Roelse, F.P. (author)
In the last decades shipping has increased significantly, resulting in larger ships with an increasing power in bow thrusters. Due to this increasing power, the hydraulic loads at bottom protection near quay structures has also increased, making a traditional bed protection more expensive. Therefore an alternative design method is suggested in...
master thesis 2014
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Schoen, J.J. (author)
Pipelines and cables on the sea bottom are usually protected by a cover of dumped rock. In case of maintenance or removal works, this cover has to be removed in order to expose the pipeline. This removal can be performed by means of a mass flow excavation process, created with a submerged jet flow. However, the exact erosion processes of a...
master thesis 2014
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Lee, E.K.C. (author)
Een van de belangrijkste aspecten bij het ontwerp van een nieuwe binnenhaven of waterweg is de toegankelijkheid voor de scheepvaart. Tot medio de jaren 90 toen de Richtlijnen Vaarwegen werden gepubliceerd werd ontworpen op basis van het oordeel van ervaren nautici die zich aan de hand van bezoek, onderzoek van de stroming een beeld van de...
master thesis 2014
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