Searched for: faculty:"Civil%5C%2BEngineering%5C%2Band%5C%2BGeosciences"
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Van Esse, W.R. (author), Perrin, C. (author), Booij, M.J. (author), Augustijn, D.C.M. (author), Fenicia, F. (author), Kavetski, D. (author), Lobligeois, F. (author)
Models with a fixed structure are widely used in hydrological studies and operational applications. For various reasons, these models do not always perform well. As an alternative, flexible modelling approaches allow the identification and refinement of the model structure as part of the modelling process. In this study, twelve different...
journal article 2013
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Van Esse, W.R. (author), Perrin, C. (author), Booij, M.J. (author), Augustijn, D.C.M. (author), Fenicia, F. (author), Lobligeois, F. (author)
In hydrological studies models with a fixed structure are commonly used. For various reasons, these models do not always perform well. As an alternative, a flexible modelling approach could be followed, where the identification of the model structure is part of the model set-up procedure. In this study, the performance of twelve different...
journal article 2013
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Hoan, N.T. (author), Stive, M.J.F. (author), Booij, R. (author), Hofland, B. (author), Verhagen, H.J. (author)
This paper presents the results of an experimental study on stone stability under nonuniform turbulent flow, in particular expanding flow. Detailed measurements of both flow and turbulence and the bed stability are described. Than various manners of quantifying the hydraulic loads exerted on the stones on a bed are extensively reviewed and...
journal article 2011
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Hoan, N.T. (author), Booij, R. (author), Hofland, B. (author), Stive, M.J.F. (author), Verhagen, H.J. (author)
The current research is aimed at evaluating the applicability of a numerical flow model to predict bed damage. First, an experimental study was carried out to get more inside into the relation between flow forces acting on a bed and the bed response (damage). The experiments were then used as the basis for the evaluation. Second, the flow was...
conference paper 2008
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Hoan, N.T. (author), Booij, R. (author), Stive, M.J.F. (author), Verhagen, H.J. (author)
The velocity and turbulence distributions of decelerating open-channel flow in a gradual expansion were measured using LDV equipment. The results show that the logarithmic law can describe the mean velocity in the bottom region well while the Coles’ law can be applied to the outer region. The shear velocity can be determined both by the...
conference paper 2007
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Hoan, N.T. (author), Booij, R. (author), Hofland, B. (author), Stive, M.J.F. (author), Verhagen, H.J. (author)
The current research is aimed at finding a proper relation between flow forces acting on the bed and the bed response. To this end, experiments were carried out in which both the bed response (quantified by a dimensionless entrainment rate) and the flow field (velocity and turbulence intensity distributions) are measured. The three available...
conference paper 2007
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Hoan, N.T. (author), Booij, R. (author), Hofland, B. (author), Stive, M.J.F. (author), Verhagen, H.J. (author)
The current research is aimed at finding a dimensionless stability parameter for non-uniform flow in which the effect of turbulence is incorporated. To this end, experiments were carried out in which both the bed response (quantified by a dimensionless entrainment rate) and the flow field (velocity and turbulence intensity distributions) are...
conference paper 2007
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Holthuijsen, L.H. (author), Booij, N. (author), Haagsma, Y.G. (author), Kieftenburg, A.T.M.M. (author), Kriezi, E. (author)
This report briefly describes the development of the SWAN model compared to the previous authorized version, SWAN 40.01. The most recent version of SWAN, SWAN 40.11 Cycle III was released on the 26th of October 2000.
report 2001
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Stelling, G.S. (author), Booij, N. (author)
Lecture notes CT wa4340. Derivation of equations using balance principles; numerical treatment of ordinary differential equations; time dependent partial differential equations; the strucure of a computer model:DUFLO; usage of numerical models.
lecture notes 1999
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Battjes, J.A. (author), Booij, N. (author), Hooimeijer, M.A. (author)
lecture notes 1999
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Booij, R. (author)
Deze notitie beschrijft de resultaten van een inleidend onderzoek naar de mechanismen van de erosie van de basislaag onder geometrisch open filters. Hierbij wordt in eerste instantie uitgegaan van de beter onderzochte erosie van de bodem van een waterloop zonder beschermende filterlaag. Op basis van metingen van Van Os (1998) in een inleidend...
report 1998
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Schiereck, G.J. (author), Booij, N. (author)
There is an increasing awareness of the role of mangrove forests in coastal ecosystems and coastal protection. At the transition between ocean and land, they have to absorb the energy that comes from the motion of the water. Little quantitative in formation is available, however, on wave transmission in these forests. In this paper the...
conference paper 1995
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Holthuijsen, L.H. (author), Eldeberky, Y. (author), Booij, N. (author), Ferier, P. (author)
The maximum possible wave conditions along the Dutch coast, which seem to be dominated by the limited water depth, have been estimated in the present study with numerical simulations. Discussions with meteorologists suggest that the maximum possible sustained wind speed in North Sea conditions is between 40 and 50 m/s (roughly equal to the wind...
report 1995
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Booij, R. (author), Tukker, J. (author)
De huidige generatie van Laser-Doppler-meetapparatuur maakt een gedetailleerde, ongestoorde meting van vloeistofsnelheden mogelijk, ook in situaties en geometrieën die vroeger niet goed voor snelheidsmetingen toegankelijk waren. In het Laboratorium voor Vloeistofmechanica is een nieuw Laser-Doppler-systeern beschikbaar. Met dit systeem is het...
report 1994
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Booij, R. (author), Melis, L.M.M. (author)
This report is essentially a report of the measurements in the carousel of the laboratory for Fluid Mechanics of the Delft University of Technology made accessible for a slightly wider public. A comprehensive documentation about the considered investigation, both concerning the theoretical background and concerning the elaboration of the...
report 1994
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Booij, R. (author)
Annular flumes are used for studying erosion and/or deposition of cohesive sediments in the laboratory. These flumes have advantages over straight recirculating flumes in that effects of inflow and outflow conditions are avoided and that there are no pumps which break down the suspended flocculated sediment. A disadvantage of annular flumes is...
report 1994
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Hoffmans, G.J.C.M. (author), Booij, R. (author)
Excessive local scour can progressively undermine the foundation of a structure. Because complete protection against scour is too expensive generally, the maximum scour-depth and the upstream slope of the scour hole have to be predicted to minimize the risk of failure. In 1961 a systematical research 'tY'ith respect to scour holes started in the...
conference paper 1993
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Booij, R. (author)
Stochastische beschrijving van de turbulentie, basisvergelijkingen, energie, turbulente afschuifstroming, turbulente stromingen in de praktijk, modellering van de turbulentie, turbulente diffusie.
lecture notes 1992
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Booij, R. (author)
Literatuuroverzicht.
report 1987
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Slats, G.N. (author), Booij, N. (author), Vermeulen, H.R. (author)
Document A betreft het hoofdrapport en document B betreft de bijlagen. Dit verslag geeft een overzicht van de werkzaamheden die in het kader van een project voor Rijkswaterstaat (No. WW 440, Bijlage 23) zijn uitgevoerd. Het project is een vervolg op het onderzoek naar een voorspellingsmodel voor hoogwater op de Rijn (lit. 1). Het daarbij...
report 1986
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