Floating Cover Influence on Sediment Transport in Dune-Bed Channels

by Brennan T. Smith, (S.M.ASCE), Iowa Inst of Hydraulic Research, Iowa City, United States,
Robert Ettema, (M.ASCE), Iowa Inst of Hydraulic Research, Iowa City, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

The results of laboratory flume experiments with a floating cover and a loose bed indicate that, relative to a free surface flow, the increased drag of a floating cover increases flow depth, decreases mean flow velocity and decreases the rate of bedload transport for a constant discharge. Bedform length and height reach maximum values for a narrow range of cover roughness values.

Subject Headings: Sediment transport | Hydraulic roughness | Fluid flow | Water discharge | River flow | Fluid velocity | Dunes

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