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Journal article

Breaking antidunes: Cyclic behavior due to hysteresis

By Deigaard, Rolf1

From

Department of Mechanical Engineering, Technical University of Denmark1

The cyclic behavior of breaking antidunes (growth, breaking of surface wave, obliteration) is investigated by use of a numerical model. The model includes the transition between supercritical and transcritical flow. As the antidune grows the flow becomes transcritical and a hydraulic jump is formed upstream of the antidune crest.

The relation between growth of the antidune and supercritical flow and between decay and transcritical flow is shown, and the significance of hysteresis in the flow conditions is investigated.

Language: English
Year: 2006
Pages: 620-623
ISSN: 19437900 and 07339429
Types: Journal article
DOI: 10.1061/(ASCE)0733-9429(2006)132:6(620)
Keywords

alluvial streams bedforms fluvial hydraulics numerical models sediment transport suspended load transcritical flow

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