Radial Hydraulic Jump

by Abdelkawi M. Khalifa, Research Asst.; Dept. of Civ. Engrg., Univ. of Windsor, Windsor, Ontario, Canada,
John A. McCorquodale, (A.M.ASCE), Prof. of Civ. Engrg.; Univ. of Windsor, Windsor, Ontario, Canada,

Serial Information: Journal of the Hydraulics Division, 1979, Vol. 105, Issue 9, Pg. 1065-1078

Document Type: Journal Paper


Radial hydraulic jump occurs in a stilling basin with diverging side walls. Experimental data is used to obtain the free-surface profiles and the floor-pressure profiles within the diverging basin. These profiles are used to develop generalized equations for the effective side wall forces for Froude numbers from 2 to 10. The momentum equation, which involves these forces, is then applied to develop an equation for the sequent depth ratio for the jump. For Froude numbers above 3, the sequent depth ratio is shown to be less than that for the rectangular jump. The length of the radial jump is about 70% of the length of a rectangular jump for the same initial Froude number. However, the volume of the jump is approximately the same as for the rectangular jump. The energy dissipation in the radial jump is approx 15% greater than for the rectangular jump.

Subject Headings: Froude number | Radiation | Hydraulic jump | Walls | Professional societies | Stilling basins | Free surfaces | Floors

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