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During a supercritical flow, what is value of Froude’s number?

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+1 vote
in Fluid Mechanics by (118k points)
During a supercritical flow, what is value of Froude’s number?

(a) Zero

(b) Greater than one

(c) Less than one

(d) Not defined

I got this question in semester exam.

Origin of the question is Characteristics of Surface Profiles topic in section Non Uniform Flow in Channels of Fluid Mechanics

1 Answer

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Best answer
The correct answer is (b) Greater than one

Explanation: Supercritical depth occurs when the inertial forces behaves as a rapid and an unstable flow. Supercritical flow transition to subcritical flow takes place through a hydraulic jump due to high energy loss. It has a Froude number greater than one.

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