Modelling morphodynamic development in the presence of immobile sediment

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...

Modelling morphodynamic changes over fixed layers

Longitudinal training walls on the Waal River (Netherlands) as a River training alternative

Longitudinal training walls are man-made river dividers. They were built in the Netherlands as a replacement of perpendicular groynes as a river training alternative to decrease flood risk and stop the ongoing bed degradation, while still allowing safe navigation. The efficiency of these structures relies on the long-term stability of the two...

The Effect of Small Density Differences at River Confluences

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...

Experimental study on bed-material transport over entrance sills at longitudinal training walls

Detailed simulation of morphodynamics: 3. Ripples and dunes

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...

Detailed simulation of morphodynamics: 2. Sediment pickup, transport, and deposition

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...

Modellering morfologie van Pannerdensche Kop tot Hoek van Holland

Eenvoudige modellering van bodemschuifspanningen bij kribben: Verkenning van haalbaarheid

Bouwstenen voor nieuw morfologisch SOBEK-model van de Rijn-Maasmonding

Interactie tussen ligging en samenstelling van de bodem rond de Pannerdensche Kop

Voorbereiding ijking Rijntakkenmodel

Low-mobility transport of coarse-grained material: Inventory

Transport van sediment over steilranden en overlaten

Sand flume experiments with graded sediment: Inception report

Measuring sediment transport in gravel-bed rivers: Inventory of instruments and methods to determine: sediment transport, movement of sediment particles, formation and breaking of armour layers