Relation of Unit Gravel Discharge to Mean Velocity

by Lilian Posada-G, Universidad Nacional de Colombia, Medellin, Colombia,
Carl F. Nordin, Jr., (M.ASCE), Universidad Nacional de Colombia, Medellin, Colombia,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


In sand-bed streams, the unit discharge of sand varies approximately with the fifth power of the mean velocity and inversely with the median diameter of the bed sediment. Similar relations are found for experimental data on gravel transport for particle sizes between about 2 and 28 mm and depths on the order of a meter. Observed transport rates agree fairly well with computed transport rates using the Engelund-Hansen equation.

Subject Headings: Sediment transport | Gravels | Bed materials | Water discharge | Transport rates | Sediment | River and stream beds

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