16.4. Hydraulic Jumps

Try these first

1. 1.

   What defines supercritical flow?

   Hint

   Think about the relationship between velocity and wave speed.

2. 2.

   What happens to energy during a hydraulic jump?

   Hint

   Consider how water behaves in turbulent conditions.

3. 3.

   What is the Froude number equal to during critical flow?

   • Less than 1
   • Equal to 1
   • Greater than 1

   Hint

   Recall the definitions of flow conditions.

4. 4.

   True or False: Hydraulic jumps result in an increase in flow speed.

   • True
   • False

   Hint

   Remember the flow characteristics of hydraulic jumps.

5. 5.

   A rectangular channel experiences a hydraulic jump where the upstream depth is 3.5m with a velocity of 6 m/s. Calculate the downstream depth and velocity.

   Hint

   Link upstream Froude number to downstream conditions using energy conservation.

6. 6.

   Design a spillway that utilizes hydraulic jumps effectively. Discuss energy considerations and downstream effects.

   Hint

   Think about flow rates and material choices.