In a gradually varied flow profile, the water depth changes:
Correct answer: C. Slowly over a long distance
- A. Abruptly over a short distance
- B. Only at a hydraulic jump
- C. Slowly over a long distance
- D. Only when the channel is circular
Explanation
Gradually varied flow has a small change in depth over a relatively long channel distance, so hydrostatic pressure distribution is usually assumed. An abrupt depth change, such as at a hydraulic jump, is classified as rapidly varied 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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