Non-uniformity and layering in sediment transport modelling 2: river application
- 17 June 2011
- journal article
- research article
- Published by Taylor & Francis Ltd in Journal of Hydraulic Research
- Vol. 49 (3), 335-344
- https://doi.org/10.1080/00221686.2011.583487
Abstract
The objectives of this research are to verify a numerical sediment transport model based on field data from a reach of the Austrian Danube River, to identify the influence of non-uniform bed-load transport modelling and the selected bed schematization on the simulation results and to investigate the cause and the numerical reproducibility of spatio-temporal variations found in field data. Simulation results based on variants of the transport equation by Meyer-Peter and Müller were compared to basket sampler and radio tracer stone observations. The best agreement was obtained for a non-uniform formulation with an exchange layer, while the uniform formulation of the transport equation underestimated the transport rates for discharges lower than the mean flow since it predicts a later onset of bed-load transport. The consideration of an exchange layer in the numerical code led to the prediction of bed-load sheets due to sorting waves, allowing the model to account for the spatio-temporal variability of field data.Keywords
This publication has 15 references indexed in Scilit:
- Non-uniformity and layering in sediment transport modelling 1: flume simulationsJournal of Hydraulic Research, 2011
- Two-Dimensional Nonequilibrium Noncohesive and Cohesive Sediment Transport ModelJournal of Hydraulic Engineering, 2009
- Modelling spatio‐temporal flow characteristics in groyne fieldsRiver Research and Applications, 2008
- Spatio-temporal variability of bedload transport rate: analysis and 2D modelling approachGeodinamica Acta, 2008
- Modelling gravel transport and morphology for the Fraser River Gravel Reach, British ColumbiaGeomorphology, 2008
- 3-D computation of flood processes in sharp river bendsProceedings of the ICE - Water Management, 2007
- Reanalysis and Correction of Bed-Load Relation of Meyer-Peter and Müller Using Their Own DatabaseJournal of Hydraulic Engineering, 2006
- Evaluation and Improvement of Bed Load Discharge Formulas based on Helley–Smith Sampling in an Alpine Gravel Bed RiverJournal of Hydraulic Engineering, 2002
- Nonuniform sediment transport in alluvial riversJournal of Hydraulic Research, 2000
- Nearly pure sorting waves and formation of bedload sheetsJournal of Fluid Mechanics, 1996