+1 vote
in Irrigation Engineering by (75.2k points)
A troublesome and oscillating hydraulic jump is normally met in cases of _____________

(a) weirs and barrages

(b) overflow spillways of dams

(c) weirs

(d) large spillways

The question was posed to me during an interview for a job.

I'd like to ask this question from Energy Dissipation Below Overflow Spillway topic in chapter Spillways, Energy Dissipators and Spillway Gates of Irrigation Engineering

1 Answer

0 votes
by (106k points)
The correct option is (a) weirs and barrages

The best explanation: When the Froude number lies in the range of 2.5 to 4.5, the jump is troublesome and oscillating as in case of weirs and barrages. There is an oscillating jet entering the jump bottom to the surface and back again which produces a large wave of irregular period doing unlimited damage.

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