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Critical Flow Condition in Open Channel Hydraulics Video Lecture | Civil Engineering Optional Notes for UPSC

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FAQs on Critical Flow Condition in Open Channel Hydraulics Video Lecture - Civil Engineering Optional Notes for UPSC

1. What is critical flow condition in open channel hydraulics?
Ans. Critical flow condition in open channel hydraulics occurs when the flow velocity is equal to the wave velocity, resulting in the formation of a hydraulic jump.
2. How is critical flow condition different from subcritical and supercritical flow?
Ans. In critical flow condition, the flow velocity equals the wave velocity, while in subcritical flow, the flow velocity is less than the wave velocity, and in supercritical flow, the flow velocity is greater than the wave velocity.
3. What are the applications of critical flow condition in open channel hydraulics?
Ans. Critical flow condition is important in the design of spillways, culverts, and hydraulic structures where energy dissipation is required to prevent erosion and damage.
4. How is critical flow condition determined in practical scenarios?
Ans. Critical flow condition can be determined by conducting physical model tests, using mathematical models such as the Manning's equation, or by analyzing field data and observations.
5. What are the factors that can affect the critical flow condition in open channel hydraulics?
Ans. Factors such as channel slope, roughness of the channel bed, flow rate, and channel geometry can all affect the critical flow condition in open channel hydraulics.
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