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Velocity Reduction at a Submerged Pipe Outlet

by Charles E. Rice, USDA, Stillwater, United States,
Kem C. Kadavy, USDA, Stillwater, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

This paper presents the results of a specific model study to reduce the 17.5 m/s (57.3 ft/s) discharge velocity of a submerged circular pipe discharging at floor level into a 30.5 m (100 ft) wide by 15.2 m (50 ft) long roller compacted concrete stilling basin. A simple four block arrangement broke up the high velocity jet causing considerable energy dissipation within the stilling basin and significantly reduced velocities exiting the stilling basin.

Subject Headings: Spillways | Fluid velocity | Concrete pipes | Stilling basins | Water discharge | Fluid flow | Flow measurement

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