Topographic evolution of sandbars: Flume experiment and computational modeling

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Abstract

Measurements of sandbar formation and evolution were carried out in a laboratory flume and the topographic characteristics of these barforms were compared to predictions from a computational flow and sediment transport model with bed evolution. The flume experiment produced sandbars with approximate mode 2, whereas numerical simulations produced a bed morphology better approximated as alternate bars, mode 1. In addition, bar formation occurred more rapidly in the laboratory channel than for the model channel. This paper focuses on a steady-flow laboratory experiment without upstream sediment supply. Future experiments will examine the effects of unsteady flow and sediment supply and the use of numerical models to simulate the response of barform topography to these influences.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Topographic evolution of sandbars: Flume experiment and computational modeling
Year Published 2010
Language English
Publisher Joint Federal Interagency Sedimentation Conference 2010
Contributing office(s) National Research Program - Central Branch
Description 8 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Conference Title 2nd Joint Federal Interagency Conference
Conference Location Las Vegas, NV
Conference Date June 27 - July 1, 2010