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3 cards from this section. Quick, good the night before a test.
Define specific energy in the context of open channel flow.
Think about what contributes to energy in a flowing fluid.
What does a Froude number less than 1 indicate?
Remember the flow type relative to gravitational forces.
What does a Froude number greater than 1 signify?
Think about the relationship with flow speed.
True or False: Specific energy increases with flow depth for all flow regimes.
Look closer at how potential energy is factored.
A rectangular channel has a width of 4 m and a flow depth of 3 m with a velocity of 5 m/s. Calculate the specific energy and identify the flow regime.
Apply E = y + (v²/2g) for specific energy; use the Froude number formula for flow regime.
Design a trapezoidal channel with a flow rate of 100 m³/s. What dimensions minimize energy loss while maintaining efficient flow?
Balance between flow area and perimeter; consider the optimal shapes discussed in class.
4 more questions in this section. Enroll free to practise them all.
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