Fluvial dunes: initiation, characterization, flow structure
SE Coleman, VI Nikora - Earth Surface Processes and …, 2011 - Wiley Online Library
Research into fluvial dunes spans disciplines, studies at grain to reach scales, and
methodological approaches that include theoretical, experimental, numerical and field …
methodological approaches that include theoretical, experimental, numerical and field …
Flow structure and resistance over subaquaeous high‐and low‐angle dunes
A prominent control on the flow over subaqueous dunes is the slope of the downstream
leeside. While previous work has focused on steep (~ 30°), asymmetric dunes with …
leeside. While previous work has focused on steep (~ 30°), asymmetric dunes with …
Bedforms in a turbulent stream: formation of ripples by primary linear instability and of dunes by nonlinear pattern coarsening
A Fourriere, P Claudin, B Andreotti - Journal of Fluid Mechanics, 2010 - cambridge.org
It is widely accepted that both ripples and dunes form in rivers by primary linear instability;
the wavelength of the former scaling on the grain size and that of the latter being controlled …
the wavelength of the former scaling on the grain size and that of the latter being controlled …
Bed load and suspended load contributions to migrating sand dunes in equilibrium
Dunes dominate the bed of sand rivers and are of central importance in predicting flow
roughness and water levels. The present study has focused on the details of flow and …
roughness and water levels. The present study has focused on the details of flow and …
Experiments in a high‐amplitude Kinoshita meandering channel: 2. Implications of bend orientation on bed morphodynamics
Experiments carried out under flat smooth bed condition in a periodic, asymmetric, Kinoshita
meandering channel showed that bend skewness controls the three‐dimensional mean flow …
meandering channel showed that bend skewness controls the three‐dimensional mean flow …
Morphology of estuarine bedforms, weser estuary, Germany
A Lefebvre, G Herrling, M Becker… - Earth Surface …, 2022 - Wiley Online Library
Large bedforms (dunes) are present in many shallow‐water environments. Knowledge of
their dimensions and dynamics is required for river and coastal management. In tidal rivers …
their dimensions and dynamics is required for river and coastal management. In tidal rivers …
A sharp view on river dune transition to upper stage plane bed
Sandy river beds are dominated by rhythmic features known as dunes. Experimental
investigations of turbulent flow and sediment transport over dunes have predominantly …
investigations of turbulent flow and sediment transport over dunes have predominantly …
Detailed simulation of morphodynamics: 3. Ripples and dunes
M Nabi, HJ De Vriend, E Mosselman… - Water resources …, 2013 - Wiley Online Library
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 …
underwater ripples and dunes. The flow is modeled by large eddy simulation on a Cartesian …
Characterising natural bedform morphology and its influence on flow
A Lefebvre, AJ Paarlberg, C Winter - Geo-marine letters, 2016 - Springer
Bedforms such as dunes and ripples are ubiquitous in rivers and coastal seas, and
commonly described as triangular shapes from which height and length are calculated to …
commonly described as triangular shapes from which height and length are calculated to …
The influence of dune lee side shape on time-averaged velocities and turbulence
A Lefebvre, J Cisneros - Earth Surface Dynamics, 2023 - esurf.copernicus.org
Underwater dunes are found in various environments with strong hydrodynamics and
movable sediment such as rivers, estuaries and continental shelves. They have a diversity of …
movable sediment such as rivers, estuaries and continental shelves. They have a diversity of …