Scouring of Sand Bars Due to Non-equilibrium Sediment Transport

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1991Publisher:Japan Society of Civil EngineersJournal:PROCEEDINGS OF HYDRAULIC ENGINEERING, volume 35, pages 435-440 (issn: 0916-7374, eissn: 1884-9172,

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Authors: SHAO, Xiaomin; TANAKA, Hitoshi; SHUTO, Nobuo;

doi: 10.2208/prohe.35.435

Scouring of Sand Bars Due to Non-equilibrium Sediment Transport

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Abstract

The scouring process of sand bars due to overflow is experimentally, theoretically and numerically studied. The bed load formula of Meyer Peter-Miuller is extended to include the effects of local slope and pressure gradient, by using the experimental results. The equation of motion is derived to describe the sand motion under non-equilibrium condition. Numerical computations based upon these relationships simulate very well the temporal change of the measured profiles of sand bars.

Keywords

Non-equilibrium sediment, transport, Bedload formulas

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