Searched for: department%3A%22Hydraulic%22
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Umapathy, S. (author)
The study focuses on the impact of human interventions on the natural behaviour of estuaries in response to sea-level rise. In particular it focuses on the affect of managed realignment on the critical sea level rise (SLRcrit) for the Poole Harbour. Numerical model ASMITA (Aggregated Scale Morphological Interaction between a Tidal inlet and the...
master thesis 2009
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Hoogduin, L. (author)
The aim of this research is to determine to what extend the scour holes limit the sediment transport through the Eastern Scheldt storm surge barrier and whether or not human adaptations, like sand-nourishments in the scour holes, can have a positive effect on the sediment import. To investigate these scenarios a numerical model (Delft3D) is used...
master thesis 2009
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Veuger, A. (author)
The area of interest in this study is the closed part of the Holland coast. This is the coastal stretch from Den Helder to Hoek van Holland. Here the coast is not interrupted by tidal inlets like at the Waddeneilanden or Zeeland.Due to erosion and accretion the coast is not always stable. Many investigations have been done on these phenomena...
master thesis 2001
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Nieuwaal, E. (author)
DHV heeft een numeriek stromings- en sedimentatiemodel gebruikt voor een studie naar de de hydraulische, morfologische en ecologische effecten van spuien van water door de slufter "het Zwin" in Zee1and. Naar aanleiding van deze studie ontstonden enkele vragen met betrekking tot de modellering van sedimentatie en erosie op droogvallende platen....
master thesis 1999
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Mulderij-Meijer, G.J. (author)
Experimenteel onderzoek naar de validiteit van een sediment pick-up functie. Sinds 1988 is door Bakker en Van Kesteren gerapporteerd over de ontwikkeling van een sediment pick-up theorie. De theorie beschrijft erosie van horizontale zandlagen onder invloed van hoge stroomsnelheden. Uit de theorie is op analytische wijze een sediment pick-up...
master thesis 1999
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Feenstra, T.D.S. (author)
De laaggelegen delen van Nederland en de gebieden langs de rivieren worden tegen hoog water beschennd met een stelsel van waterkeringen, waaronder dijken. Over dijkbouw is veel bekend, maar over het bezwijken van een dijk veel minder. Dit is wel een steeds belangrijker wordend onderwerp. In de probabilistiek wordt met het mogelijk falen van een...
master thesis 1999
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Balsters, A. (author)
Naar aanleiding van de hoogwatergolf op de Maas in 1993 werd door de Minister van Verkeer en Waterstaat de Commissie Boertien 11 ingesteld, met als opdracht te adviseren op welke wijze de hoogwateroverlast in het Maasdal in de toekomst beperkt kan worden. Het advies luidde in hoofdzaak een verbreding van de Grensmaas en een verdieping van de...
master thesis 1998
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Cloin, B. (author)
The main goals of this study are to obtain more insight and quantitative data of the selective transport process under sheet flow conditions. Experiments were carried out in the Large Oscillating Water Tunnel of WL DELFT HYDRAUUCS for five different hydraulic conditions. The sand that was used consisted of a mixture of 50% fine (0. 13mm) and 50%...
master thesis 1998
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Van Os, P. (author)
In de kust- en waterbouw worden regelmatig geometrisch open filterconstructies toegepast. Er bestaat onduidelijkheid over het doordringen van de hydraulische be lasting in de filterlaag en de invloed daarvan op de erosie van de basislaag. Eerder onderzoek geeft het verband aan tussen de schuifspanning op de filterlaag en schuifspanning op de...
master thesis 1998
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Van der Hout, G. (author)
This study consists of three sections: - experiments on sand transport in oscillatory sheet flow with two sands (D50 = 0.21 and 0.32 mm) - verification of three existing sediment transport models - extension of these models to include the gradation of the sediment The experiments are performed in the Large Oscillating Water Tunnel (see also data...
master thesis 1997
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Israël, C.G. (author)
Het bepalen van het sedimenttransport over de Plaat van Ossenisse is van belang om inzicht te krijgen in de processen die een rol spelen bij de aanzanding van de Drempel van Hansweert. Deze drempelligt in de vaargeul ten oosten van de Plaat van Ossenisse. Er is reeds een studie verricht naar drempelvormende mechanismen, maar deze hebben...
master thesis 1997
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Van Noort, J.C. (author)
Rip currents are narrow and intense, offshore directed flows in the nearshore zone. A rip current is able to transport a considerable amount of water and sediment seaward and may dominate the morphological exchange between surfzone and the offshore. Rip currents are often located nearby lateral boundaries that obstruct the longshore current, but...
master thesis 1997
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Van der Wal, R.J. (author)
Especially during storms the coast-profile can change dramatically. During storms large waves cause high oscillatory water velocities near the bottom and the bed becomes plane and sheet flow becomes the dominant sediment transport mode. Because field measurements are difficult to perform in-situ, laboratory experiments concerning these processes...
master thesis 1996
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Caan, C.P. (author)
In Nederland wordt, ter vervanging van de huidige ontwerpmethodiek op basis van een overschrijdingskans, gewerkt aan een nieuwe, probabilistische ontwerpnorm voor de zee- en rivierdijken. Deze nieuwe norm wordt gebaseerd op een risicobenadering. Hierbij bestaat het risiko uit de kans op een overstroming, gecombineerd met de schade die daardoor...
master thesis 1996
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Adriaens, F. (author), Van Rillaer, L. (author)
The objective of the present work is to see whether the transport of sediment in a turbulent free surface flow can be studied with a new method of video image analysis, called the Two-Dimensional Particle Tracking Velocimetry. A slice of a two-dimensional turbulent flow in a laboratory flume is illuminated and particles are injected. After the...
master thesis 1996
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Eerkens, J.W. (author)
In one-dimensional river modelling it is common to schematise the cross-section into a rectangular cross-section with a constant width. If a quasi-steady flow is assumed, the equilibrium longitudinal profile is known and unique: the bottom slope is constant and equals the water surface slope. However, numerical calculations at DELFT HYDRAULICS...
master thesis 1996
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Grasmeijer, B.T. (author), Sies, E.M. (author)
Coastal changes occur mostly as a result of changes in sediment transport along the coast. If at cross-section A, the sediment transport is for any reason larger (or smaller) than at cross-section B, accretion (or erosion) will take place in between the two cross-sections. For prediction of coast-lines in the future, the prediction of the net...
master thesis 1995
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Van den Wollenberg, N.A.M. (author)
The purpose of this study is to quantify the cross-shore sediment transport, caused by washover flows on barrier islands in general and on the Wai San Ting sandbar in Taiwan in particular. Washover transport on a barrier island is the transport of sediment across the sandbar f r om its steeper seaward face towards the gentler sloping landward or...
master thesis 1994
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Van Lieshout, M.C. (author)
In this report a model has been derived to simulate morphological behaviour under tidal conditions. The model is based on the set of equations of motion and mass-balance for both water and sediment. The study focused on the underlying assumption that the kinematic response of the water movement on the bottom variation is much stronger than the...
master thesis 1993
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Janssen, C.M. (author)
Cross-shore sediment transport is an important phenomenon in coastal engineering, which mainly accounts for the short-term changes in the coastline. To study on- and offshore transport the evolution of the beach profile is considered. For investigation of the beach profile small-scale physical models are often used. A problem in using a physical...
master thesis 1993
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