In open-channel flow, critical flow occurs when the Froude number is:
Correct answer: C. Equal to one
- A. Zero
- B. Less than one
- C. Equal to one
- D. Greater than one
Explanation
Critical flow is defined by a Froude number of one, where disturbances travel at the same speed as the flow. Values below one indicate subcritical flow, while values above one indicate supercritical flow.
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About Hydraulics and Water Resources
Hydraulics studies fluid properties, pressure, buoyancy, continuity, Bernoulli's equation, momentum, pipe flow, open-channel flow and hydraulic machines. Water resources extends these principles to pumps, turbines, reservoirs, irrigation, floods and hydrology, while distinguishing laminar from turbulent flow and uniform from gradually varied channel flow.
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