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The Froude number of a hydraulic jump is 5.5. The...

The Froude number of a hydraulic jump is 5.5. The jump can be classified as ____________

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asked Sep 26, 2023 in Irrigation Engineering by Carter (75.2k points)

The Froude number of a hydraulic jump is 5.5. The jump can be classified as ____________

(a) a weak jump

(b) an oscillating jump

(c) rough and choppy jump

(d) steady jump

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This interesting question is from Energy Dissipation Below Overflow Spillway in section Spillways, Energy Dissipators and Spillway Gates of Irrigation Engineering

irrigation engineering
spillways
energy dissipators and spillway gates
energy dissipation below overflow spillway

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1 Answer

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answered Nov 9, 2023 by Greg (106k points)

Right answer is (d) steady jump

Easy explanation: When the Froude number is in the range of 4.5 to 9.0, the jump is steady. This is generally the case of dams and spillways. The oscillating jump occurs between the range of 2.5 to 4.5 and when Froude number is less than 2.5, the jump is weak and when it is more than 9.0, the jump is rough and choppy.

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