5. Lecture – 37

Try these first

1. 1.

   Define the Froude number.

   Hint

   Think about its relationship with gravity and fluid velocity.

2. 2.

   What happens during a hydraulic jump?

   Hint

   Remember the role of velocity in flow conditions.

3. 3.

   What is a hydraulic jump?

   • A decrease in flow velocity
   • An increase in flow velocity
   • A turbulent flow

   Hint

   Consider the characteristics of supercritical versus subcritical flow.

4. 4.

   True or False: The Froude number can only be greater than one.

   • True
   • False

   Hint

   Think about the implications of flow regimes.

5. 5.

   A rectangular channel with a width of 2 meters and a flow rate of 3 m³/s has a depth of 0.5 m. Find the Froude number at this depth and determine if a hydraulic jump is likely.

   Hint

   Use the Q and A to find velocity first!

6. 6.

   Consider a scenario with two depths before and after a hydraulic jump of 0.4 m and 1.2 m. Determine the head loss using the related equations discussed.

   Hint

   Recall the specific formulas we've covered relating to energy conservation!