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Kirichek, Alex (author), Cronin, Katherine (author), de Wit, Lynyrd (author), Meshkati, Ebi (author), Pennekamp, Johan (author), Wijdeveld, Arjan J. (author), Sloff, C.J. (author)Water Injection Dredging (WID) has been successfully applied for removing sediment deposits in reservoirs, which results in an increase of their storage capacity. This dredging method is based on the fluidization of the top sediment layer by pressurized injection of water by a dredging vessel. The fluidized sediment can be transported towards...conference paper 2022
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Chavarrías, Víctor (author), Ottevanger, Willem (author), Sloff, C.J. (author), Mosselman, E. (author)Predicting the formation and break-up of immobile layers is of crucial importance for river management, as these processes greatly affect the morphodynamic evolution of the river bed. Two models are currently available for studying these processes: Struiksma's and Hirano's model. In this paper, we show that both models present limitations. This...journal article 2022
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Huismans, Y. (author), Koopmans, H. (author), Wiersma, Ane (author), de Haas, Tjalling (author), Berends, Koen (author), Sloff, C.J. (author), Stouthamer, Esther (author)River deltas commonly have a heterogeneous substratum of alternating peat, clay and sand deposits. This has important consequences for the river bed development and in particular for scour hole formation. When the substratum consists of an erosion resistant top layer, erosion is retarded. Upon breaking through a resistant top layer and...journal article 2021
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- Montijn, Roline (author), Mosselman, E. (author), Sloff, C.J. (author) poster 2021
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- Chavarrias, Victor (author), Ottevanger, Willem (author), Sloff, C.J. (author), Mosselman, E. (author) poster 2021
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- Irving, Meghan (author), Sloff, C.J. (author) abstract 2021
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- Sloff, C.J. (author), van Walsem, Thomas (author) abstract 2021
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van Rooijen, Erik (author), Mosselman, E. (author), Sloff, C.J. (author), Uijttewaal, W.S.J. (author)Remarkable 3D flow structures occur at river confluences with small density differences due to differences in sediment concentration or temperature. We explain these by comparing numerical simulations for an idealized confluence with aerial photographs of several river confluences where color differences express the pattern of density...journal article 2020
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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)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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- 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