Estimating Average Velocity in Cobble-Bed Channels

by Dale I. Bray, Univ of New Brunswick, Fredericton, NB, Can,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


A data set obtained from natural channels having D//5//0 less than 64 mm and d/D//5//0 in the range of 3 to 20 is used as a basis for testing equations proposed by Limerinos, Thompson and Campbell, and Bathurst for this class of channel. The distribution of values of the Strickler coefficient for estimating Manning's n is presented. Best-fit equations indicate that there is little value in using a measure of bed material size for this range of flow conditions.

Subject Headings: Fluid velocity | River and stream beds | Flow measurement | Bed materials | Channel flow | Water flow | Waterways | Mathematics

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