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Erosion of fine sediments from a rough bed

Trevisson, M.; Eiff, O.

Gravel beds in river systems represent important aquatic habitats, which may be endangered by the introduction of large amounts of fine sediments. In order to better understand the interaction between fine sediments and coarse immobile beds in sediment supply-limited systems, a series of flume experiments was conducted. The main goal was to determine under what conditions erosion stops. The experiments were performed over a bed of regularly arranged spheres. Plastic particles were taken as sediment and the erosion was investigated under uniform flow conditions for variable bed shear stress conditions just above critical conditions. The system was observed to behave in two different ways: with higher bed shear stress fine sediments were completely washed out, whilst with lower stress the sediment bed reached a stable level just above the equator of the spheres.

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Verlagsausgabe §
DOI: 10.5445/IR/1000086599
Veröffentlicht am 19.10.2018
DOI: 10.1051/e3sconf/20184005058
Zugehörige Institution(en) am KIT Institut für Hydromechanik (IFH)
Publikationstyp Proceedingsbeitrag
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2267-1242
KITopen-ID: 1000086599
Erschienen in 9th International Conference on Fluvial Hydraulics, River Flow 2018; Lyon-Villeurbanne; France; 5 September 2018 through 8 September 2018. Ed.: A. Paquier
Verlag EDP Sciences, Les Ulis
Seiten Art. Nr.: 05058
Serie E3S Web of Conferences ; 40
Nachgewiesen in Scopus
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