Hydraulic Jump Type Stilling Basins for Froude Number 2.5 to 4.5

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Hydraulic Jump Type Stilling Basins for Froude Number 2.5 to 4.5

Author: NANI G. BHOWMIK Title: | Size: 1.01 MB | Format: PDF | Publisher: STATE WATER SURVEY DIVISION WILLIAM C. ACKERMANN, D.Sc, Chief | Year: 1971 | pages: 35 | ISBN: unknown

Title: Hydraulic Jump Type Stilling Basins for Froude Number 2.5 to 4.5.
Abstract: Hydraulic jump type stilling basins are used to prevent the detrimental effects
of the supercritical flow velocity on the stability of the channel. Laboratory investigations
were conducted for both the ordinary and the forced hydraulic jumps on a horizontal
floor in the Froude number range of 2.5 to 4.5. Data from the ordinary hydraulic jump
correlate well with the theory and other published data. A set of appurtenances (baffle
blocks and an end sill, basin L) for forced hydraulic jump was found to perform satisfactorily.
Comparison of the test data from this basin with corresponding data from the
ordinary hydraulic jump showed that the required tail-water depth can be decreased,
energy loss can be increased, and the jump can be formed in a much shorter basin. A
theoretical relationship has also been developed to predict the turbulent pressure fluctuations
in the stilling basins. Hydraulic design of stilling basins for the Froude number
range of 2.5 to 4.5 can be accomplished with the aid of the criteria developed in
the report.
Reference: Bhowmik, Nani G. Hydraulic Jump Type Stilling Basins for Froude Number
2.5 to 4.5. Illinois State Water Survey, Urbana, Report of Investigation 67, 1971.
Indexing Terms: Baffles, design criteria, energy losses, Froude number, hydraulic jump,
laboratory tests, sluice gates, spillways, stilling basins, tail water, turbulence.

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