15.2.1. Flow Regimes

Try these first

1. 1.

   Define subcritical flow.

   Hint

   Consider the influence of gravity and inertia.

2. 2.

   What does a Froude number of 1 indicate?

   Hint

   Think about what happens at the balance point.

3. 3.

   What Froude number defines supercritical flow?

   • < 1
   • = 1
   • > 1

   Hint

   Think about which forces dominate.

4. 4.

   True or False: Critical flow occurs when gravity forces are greater than inertia forces.

   • True
   • False

   Hint

   Consider the conditions defining critical flow.

5. 5.

   A canal channel is designed to maintain a specific Froude number for effective flow. If the channel depth is varied, how would you determine the width needed to keep a constant discharge? Provide calculations.

   Hint

   Use the equations related to flow area and Froude's number.

6. 6.

   Consider a scenario where a hydraulic jump occurs. Analyze the energy loss and effects of flow depth before and after the jump. Provide a detailed explanation.

   Hint

   Examine the relationship between Froude numbers and flows.