15.1.1. Lecture Overview

Try these first

1. 1.

   What is open channel flow?

   Hint

   Think about how rivers and streams behave.

2. 2.

   What does a Froude number less than 1 indicate?

   Hint

   Consider the relationship between inertia and gravity.

3. 3.

   What characterizes supercritical flow?

   • Froude number < 1
   • Froude number = 1
   • Froude number > 1

   Hint

   Think about the ratios of forces in motion.

4. 4.

   True or False: In subcritical flow, disturbances can travel upstream.

   • True
   • False

   Hint

   Consider what happens in calm waters.

5. 5.

   Calculate the Froude number for a river flow with a velocity of 3 m/s and a depth of 2 m. Is the flow subcritical, critical, or supercritical?

   Hint

   Remember to check the ratio against the Froude number criteria.

6. 6.

   Discuss the implications of hydraulic jumps in a civil engineering project focused on canal construction. What designs need to change?

   Hint

   What happens to flow energy during transitions? Think about stability.