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Bed Topography Evolution in a Discordant Bed Channel Confluence

Author(s): Sebastian Guillen Ludena; Mario J. Franca; Anton J. Schleiss; Antonio H. Cardoso

Linked Author(s): António Heleno Cardoso, Anton J. Schleiss, Mário Franca

Keywords: Confluence; Discordant bed; Bed topography evolution; Sediment transport; Morphodynamic

Abstract: Two experimental tests carried out under mobile bed conditions, with different sediment rates in both channels are presented with the aim of studying the bed topography evolution in a discordant bed channel confluence and analyzing the interaction between the bed topography and flow in the confluence. During the tests, bed topography surveys and water level profiles were recorded at the beginning, at equilibrium and at different instants of the experiment. Discharge ratio and flow-morphology interaction were identified as influent factors on the bed topography evolution for both channels.


Year: 2014

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