Searched for: department:"Hydraulic"
(1 - 16 of 16)
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Hollander, W. (author)
A filter can be applied to protect a bed against scour. Normally, these filters are geometrically closed, to prevent winnowing of the base material through the filter. However, geometrically closed filters are expensive and difficult to realize in the field. Geometrically open filters can serve as an alternative. Within an open filter, the pores...
master thesis 2015
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Steenstra, R.S. (author)
For the design of granular bed protections often a stability parameter is used. The stability parameter represents the forces that are acting on the stones and is used to predict the response of the bed to these forces. Existing parameters are often derived for a limited range of application. When the parameter is used outside this range, the...
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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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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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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Jansens, R. (author)
Filterconstructies hebben als doel constructies te beschermen tegen uitspoeling van grond en beschadiging door wateroverdrukken. Een granulaire filterconstructie bestaat uit een ofmeer lagen van granulairfiltermateriaal, die het onderliggende, loskorrelige basismateriaal tegenhoudt, maar het water doorlaat. Meestal wordt het criterium gehanteerd...
master thesis 2000
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De Boer, G.M. (author)
Experimental research on the stability of bed protection and transport of stones on such a bottom protection. Investigated were the effects of duration and magnitude of the load, the shape, and placing density of the stones.
master thesis 1998
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Weustink, O.W.A. (author)
Laboratory research on the distribution of stones during the dumping process from a side stone dumping vessel. Focus on the variation in the height of the toplayer of the bed protection (degree of leveling). Research in cooperation with Royal Boskalis Westminster.
master thesis 1998
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Boutovski, A. (author)
Experimental research on the stability of dumped stones for bed protections with focus on the gradation of the stones. A bottom protection has more roughness than anticipated. The Shields criterion is still applicable (psi=0.03)
master thesis 1998
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Van Bree, B. (author)
Momenteel wordt onderzocht of het technisch haalbaar is de Golf van Khambhat, een zee-arm in het noordwesten van India, af te sluiten. Bij de afsluiting van dit estuarium treden, door het enorme reservoiroppervlak en het grote getijverschil, enorm hoge stroomsnelheden op. Uit deze haalbaarheidsstudie kwam de meer algemene vraag naar voren of het...
master thesis 1997
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Bos, G. (author)
master thesis 1997
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Wiersum, B.S. (author)
In rivieren en kanalen worden bodembeschermingen toegepast om te voorkomen dat stromingen ontoelaatbare ontgrondingen veroorzaken. Naast natuurlijke stromingen in de rivier veroorzaken scheepsgeïnduceerde waterbewegingen deze stromingen. Een bodembescherming be staat meestal uit een toplaag met daaronder een of meer filters. De toplaag moet...
master thesis 1996
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Van Breugel, R.H. (author), Ten Hove, T.D. (author)
In een stroomgoot is modelonderzoek gedaan naar de steenstabiliteit van een bodembescherming bij waterbouwkundige konstrukties. Onderzoek naar de grootte en lokatie van de stroomaanvallen kan leiden tot belangrijke besparingen in de kosten van aanleg en onderhoud van bodembeschermingen. Onderzoek is gedaan naar konstrukties die de stroming...
master thesis 1995
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Grote, W. (author)
Stability of rock on horizontal bottoms and steep slopes subjected to wave attack has been a subject of investigation in the past. But the stability of rock on gentle slopes has not been investigated systematically. The objective of this research is to investigate the relations between the different variables involved. A possible application is...
master thesis 1994
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Berendsen, E. (author)
Benedenstrooms van uitstroomkonstrukties wordt het stroombeeld bij stromende afvoer gekenmerkt door drukfluctuaties, wervels en neren. Hierdoor ontstaat nogal eens schade aan de uit stortstenen bestaande bodembescherming. In het geval van een eenparige stroming is het begin van bewegen goed te beschrijven d.m.v. het schuifspanningskriterium van...
master thesis 1988
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Plooy, P.J. (author)
The potential for hydro power in Nepal is immense; the country clings to the south slopes of the Himalayas and has numerous streams and rivers that are fed by the monsoon rains and the melting mountain snow. The total potential is estimated at 83,000 MW, and even if only a fraction of this is economically feasible to develop it sets an aim for...
master thesis 1988
Searched for: department:"Hydraulic"
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