Searched for: author:"Sloff, C.J."
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Vermeulen, Bart (author), Boersema, Matthijs (author), Hoitink, Ton (author), Sieben, Arjan (author), Sloff, C.J. (author), Van Der Wal, Maarten (author)
Longitudinal training dams (LTDs) are a promising alternative for river groynes. Here we summarize findings of a recent study focused on the along river transition from a series of river groynes to an LTD, where the flow divides between the fairway and the side channel between the LTD and the river bank. A scale model is setup using...
journal article 2018
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Giardino, A (author), Schrijvershof, R. (author), Nederhoff, C.M. (author), de Vroeg, H (author), Brière, CDE (author), Tonnon, Pieter Koen (author), Caires, S. (author), Walstra, D.J.R. (author), Sosa, J. (author), van Verseveld, WJ (author), Schellekens, J. (author), Sloff, C.J. (author)
The West African coastal barrier is maintained by significant wave-driven longshore sand transport. This sand originates from rivers and large coastal sand deposits. Today, however, much of the fluvial sand is trapped behind river dams and/or interrupted at several locations by port jetties. As a result, the sandy coastal barrier is eroding...
journal article 2018
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van Rooijen, E.J. (author), Mosselman, E. (author), Sloff, C.J. (author), Uijttewaal, W.S.J. (author)
Confluences are fascinating elements in river systems. The merging of tributary rivers produces complex hydrodynamics that can play an important role in sediment transport problems, ecological studies or the routing of a pollutant. If the two merging rivers originate from different regions they can have different characteristics. One such a...
abstract 2017
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Verschelling, Eelco (author), van der Deijl, Eveline (author), van der Perk, Marcel (author), Sloff, C.J. (author), Middelkoop, Hans (author)
Sediment deposition is one of the key mechanisms to counteract the impact of sea level rise in tidal freshwater wetlands (TFWs). However, information about sediment deposition rates in TFWs is limited, especially for those located in the transition zone between the fluvially dominated and tidally dominated sections of a river delta where...
journal article 2017
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Van Zuylen, J.A. (author), Sloff, C.J. (author)
This study deals with the development of deep scour holes in the river bed of the Dutch Rhine delta in the Netherlands. Assessment of multi-beam surveys, laboratory-flume experiments, and 3D numerical modelling, shows how fast this type of scour holes grows in depth and width and which are the relevant processes.
conference paper 2015
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Van Zuylen, J.A. (author), Sloff, C.J. (author)
This study deals with the development of deep scour holes in the river bed of the Dutch Rhine delta in the Netherlands. Assessment of multi-beam surveys, laboratory-flume experiments, and 3D numerical modelling, shows how fast this type of scour holes grows in depth and width. These typical scour holes are found in the tidal deltaic rivers that...
conference paper 2015
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Sloff, C.J. (author), Omer, A.Y.A. (author), Heynert, K.V. (author), Mohamed, Y.A. (author)
Appropriate operation strategies that allow for sediment flushing and sluicing (sediment routing) can reduce rapid storage losses of (hydropower and water-supply) reservoirs. In this study we have shown, using field observations and computational models, that the efficiency of these operations increases when utilizing dynamics of flow and...
conference paper 2015
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Nabi, M. (author), De Vriend, H.J. (author), Mosselman, E. (author), Sloff, C.J. (author), Shimizu, Y. (author)
We present a 3-D physics-based high-resolution modeling approach to the dynamics of underwater ripples and dunes. The flow is modeled by large eddy simulation on a Cartesian grid with local refinements. The sediment transport is modeled by computing pickup, transport over the bed, transport in the water column, and deposition of rigid spherical...
journal article 2013
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Nabi, M. (author), De Vriend, H.J. (author), Mosselman, E. (author), Sloff, C.J. (author), Shimizu, Y. (author)
The paper describes a numerical model for simulating sediment transport with eddy-resolving 3-D models. This sediment model consists of four submodels: pickup, transport over the bed, transport in the water column and deposition, all based on a turbulent flow model using large-eddy simulation. The sediment is considered as uniform rigid...
journal article 2013
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Verbruggen, W. (author), Mosselman, E. (author), Zolezzi, G. (author), Sloff, C.J. (author)
conference paper 2013
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Sloff, C.J. (author), van der Sligte, R.A.M. (author), Huismans, Y. (author)
Computational effort still poses serious limitations to practical use of 2D and 3D models for long-term largescale morphological modelling. To deal with long-term issues related to sea-level rise and long-term planning in the Dutch Rhine delta, we have adapted the computational approach for more efficient and fast modelling while including all...
conference paper 2013
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Verbruggen, W. (author), Mosselman, E. (author), Zolezzi, G. (author), Sloff, C.J. (author)
Local geometrical perturbations in alluvial channels can generate a pattern of alternate bars called ‘overdeepening’. Previous linear analyses and laboratory experiments showed that these bars arise downstream of perturbations in the relatively narrow and deep channels corresponding to subresonant conditions, but both upstream and downstream of...
conference paper 2013
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Mei, X. (author), Van Gelder, P.H.A.J.M. (author), Sloff, C.J. (author), Prinsen, G. (author), Vrijling, J.K. (author)
conference paper 2012
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Nabi, M. (author), De Vriend, H.J. (author), Mosselman, E. (author), Sloff, C.J. (author), Shimizu, Y. (author)
We present a three-dimensional high-resolution hydrodynamic model for unsteady incompressible flow over an evolving bed topography. This is achieved by using a multilevel Cartesian grid technique that allows the grid to be refined in high-gradient regions and in the vicinity of the river bed. The grid can be locally refined and adapted to the...
journal article 2012
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Van der Meer, C. (author), Mosselman, E. (author), Sloff, C.J. (author), Jagers, B. (author), Zolezzi, G. (author), Tubino, M. (author)
Local geometrical perturbations of alluvial channels can generate a pattern of non-migrating bars and pools. This phenomenon is known as “overdeepening”, because the pools locally enhance the scour in river bends. Overdeepening occurs only downstream of a perturbation if the channel is in the subresonant and subcritically damped regime, which...
conference paper 2011
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Sloff, C.J. (author), Van Spijk, A. (author), Stouthamer, E. (author), Sieben, A. (author)
In the Rhine-Meuse delta in the south-western part of the Netherlands, the morphology of the river branches is highly dependent on the erodibility of the subsoil. Erosion processes that were initiated after closure of the Haringvliet estuary branch by a dam (in 1970), caused a strong incision of several connecting branches. Due to the geological...
conference paper 2011
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Sloff, C.J. (author)
The DVR Toolbox is a modeling system developed to be used as an operational model for long-term morphological assessment of the Rhine branches in the Netherlands (10 to 50 years). The Toolbox consists of a 2D computational core (containing the Delft3D modeling system), a shell that controls input- and output, and a system for time/simulation...
conference paper 2011
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Kleinhans, M.G. (author), Jagers, H.R.A. (author), Mosselman, E. (author), Sloff, C.J. (author)
At river bifurcations, water and sediment are divided over two branches. The dynamics of the bifurcation determine the long-term evolution (centuries) of the downstream branches, potentially leading to avulsion, but the dynamics are poorly understood. The long-term evolution can only be studied by one-dimensional models because of computational...
journal article 2008
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Yossef, M.F.M. (author), Zagonjolli, M. (author), Sloff, C.J. (author)
report 2008
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Sloff, C.J. (author), Erdbrink, C.D. (author)
report 2008
Searched for: author:"Sloff, C.J."
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