Open Channel Flow Resistance in Horseshoe Conduits

by David A. King, Southern Co Services, Atlanta, GA, USA,
Terry W. Sturm, Southern Co Services, Atlanta, GA, USA,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


An experimental study of open channel flow resistance in horseshoe-shaped conduits is reported. The friction factor is shown to increase approximately 20 percent in comparison to values taken from the Moody diagram for depths larger than half full. The resultant changes in the ratio of part-full velocity to full-flow velocity are investigated and compared with field results for circular pipes.

Subject Headings: Open channel flow | Flow resistance | Load and resistance factor design | Conduits | Field tests | Fluid velocity | Comparative studies | River flow

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