IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 5: Environmental Hydraulics and Hydrology : Variability in measured and simulated bed load transport at a large gravel bed river
Variability in measured and simulated bed load transport at a large gravel bed river
Author : M. Tritthart, M. Liedermann and H. Habersack
In the scope of a river engineering project implemented in a 3 kilometre reach of the Austrian Danube to the East of Vienna, bed load transport was measured in several cross-sections during the entire discharge spectrum over the course of four consecutive years. In addition, a 2D/3D integrated numerical sediment transport model capable of calculating non-uniform bed load transport under consideration of sorting processes was set up for the river reach. A periodicity in bed load transport rates of 15 hours for a 1-year flood and over 30 hours for mean flow was determined from transient sediment transport simulations, resulting from sorting waves and the downstream migration of bed forms. The plausibility of these results was confirmed by radio acoustic tracer experiments. Average bed load transport rates as well as their variability range obtained from measurements during equal discharge classes at different sampling dates were predicted correctly by non-uniform modelling with sorting processes.
File Size : 362,282 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 5: Environmental Hydraulics and Hydrology
Date Published : 01/07/2011
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