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Gewählte Publikation:

Tritthart, M; Liedermann, M; Schober, B; Habersack, H.
(2011): Non-uniformity and layering in sediment transport modelling 2: river application
J HYDRAUL RES. 2011; 49(3): 335-344. FullText FullText_BOKU

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 Muller 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.
Autor/innen der BOKU Wien:
Habersack Helmut
Liedermann Marcel Georg
Schober Bernhard
Tritthart Michael
BOKU Gendermonitor:


Find related publications in this database (Keywords)
Bed-load
Danube River
empirical equation
numerical model
river flow
sediment transport


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