15.1.2. Open Channel Flow

Try these first

1. 1.

   What is a Froude number?

   Hint

   Think of it as a way to characterize types of flows.

2. 2.

   Define subcritical flow.

   Hint

   Consider what forces are dominant in this flow.

3. 3.

   What is the range of Froude numbers for subcritical flow?

   • >1
   • <1
   • =1

   Hint

   Consider the defining nature of the flow.

4. 4.

   True or False: A hydraulic jump is beneficial for energy dissipation.

   • True
   • False

   Hint

   Think about the purpose of hydraulic jumps in flow behavior.

5. 5.

   Given a channel width of 5m and a desired discharge of 300m³/s, determine the depth for critical flow using the specific energy approach.

   Hint

   Consider critical depth relationships with energy balance.

6. 6.

   Discuss how a change in channel width influences flow depth and specific energy. Provide theoretical ramifications for engineering designs.

   Hint

   Relate changes back to energy and discharge relationships.