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3 cards from this section. Quick, good the night before a test.
What does the Froude number compare?
Think about the forces involved in fluid mechanics.
What is the formula for wave speed in open channels?
Recall that g is acceleration due to gravity and y represents flow depth.
What happens to wave speed when flow depth increases?
Think about how gravity and depth interact.
True or False: In subcritical flow, disturbances can propagate upstream.
What does the Froude number indicate about these flows?
Consider a canal where the flow depth is 2 meters. Calculate the wave speed and explain how changes in flow depth would affect it.
Think about how the value of y changes the wave speed.
Design a scenario where the Froude number is equal to 1. What happens to disturbances in this flow state?
Reference the balance of forces in critical flow.
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