Free Overall as Flow Measuring Device

by Sebastian W. Bauer, Jr. Res. Engr.; Hydro. Res. Unit, Dept. of Civ. Engrg., Univ. of the Witwatersrand, Johannesburg, South Africa; formerly, Byllesby Fellow in Civ. Engrg., Lehigh Univ., Bethlehem, PA,
Walter H. Graf, Dir.; Hydr. and Sanitary Engrg. Div., Fritz Engrg. Lab., Lehigh Univ., Bethlehem, PA,

Serial Information: Journal of the Irrigation and Drainage Division, 1971, Vol. 97, Issue 1, Pg. 73-83

Document Type: Journal Paper


The critical depth in a rectangular channel gives a simple depth-discharge relation. However, the location of the critical depth cannot be easily determined. Herein, a functional relationship between the critical depth and the end depth, which can readily be measured, is presented.

Subject Headings: Flow measurement | Free flow

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