3. Department of Civil Engineering

Try these first

1. 1.

   Define the Froude number and its significance in fluid flow.

   Hint

   Recall the formula that defines this number.

2. 2.

   What happens to flow when it undergoes a hydraulic jump?

   Hint

   Think of the Froude number relation.

3. 3.

   What does a Froude number greater than 1 indicate?

   • Supercritical Flow
   • Subcritical Flow
   • Transcritical Flow

   Hint

   Recall our earlier discussions on flow regimes.

4. 4.

   Is energy loss in a hydraulic jump due to friction?

   • True
   • False

   Hint

   Think about what the calculations aim to show.

5. 5.

   A hydraulic jump occurs where Fr1 = 8.5. Given y1 = 0.3m, derive y2 and the energy loss.

   Hint

   Ensure your calculations follow the correct sequence!

6. 6.

   Design a spillway having a jump with Fr1=5. What considerations must be taken into account for managing energy loss?

   Hint

   Think about all environmental aspects and structural integrity.