2. Lecture - 31

Try these first

1. 1.

   Define specific energy in the context of open channel flow.

   Hint

   Think about the components of energy involved.

2. 2.

   What does Bernoulli's equation express?

   Hint

   Consider the relationship between pressure and velocity.

3. 3.

   What is the unit of specific energy in open channel flow?

   • Pascals
   • Feet
   • Joules per kilogram

   Hint

   Think about the components it consists of.

4. 4.

   True or False: Supercritical flow has a lower velocity than subcritical flow.

   • True
   • False

   Hint

   Recall the definitions of the flow types.

5. 5.

   Given a ramp height of 0.5 feet and an upstream depth of 2.5 feet with a flow rate of 4.75 square feet per second, derive the possible downstream depths.

   Hint

   Use the relationships established during our exploration.

6. 6.

   Discuss the implications of an abrupt channel depth increase on flow regime shift and analyze the resultant energy conditions.

   Hint

   Evaluate what happens to energy conservation during sudden changes.