Question

Supercritical depth occurs when_________

(a) Inertial forces behave as unstable flow

(b) Roughness is high

(c) Critical depth increases

(d) Hydraulic radius expands

I have been asked this question by my college director while I was bunking the class.

I need to ask this question from Characteristics of Surface Profiles in section Non Uniform Flow in Channels of Fluid Mechanics

Answer 1

The correct answer is (a) Inertial forces behave as unstable flow

The best 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.