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4 cards from this section. Quick, good the night before a test.
What formula defines specific energy in an open channel?
Remember it includes depth and a velocity component.
What does a Froude number less than 1 indicate?
Think about what type of flow is calm and tranquil.
What is the Froude number if velocity is 2 m/s and depth is 1 m?
Calculate using the formula carefully.
True or False: A critically flowing channel will always have a Froude number of 2.
Think about what the definition of critical flow is.
A trapezoidal channel has a bottom width of 3 m, side slope of 1:2, and carries a discharge of 5 m³/s at a depth of 1.2 m. Calculate the critical depth and specific energy at this condition.
Use the relationship between dimensions and apply the discharge formula correctly.
For a wide rectangular channel with a discharge of 10 m³/s, find the depth that minimizes specific energy and calculate the corresponding specific energy.
Remember to assess how discharge and channel width interact to determine depth!
5 more questions in this section. Enroll free to practise them all.
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