5.2. Control Volume for Uniform Flow

Try these first

1. 1.

   What is the definition of a control volume in fluid mechanics?

   Hint

   Think about a physical space you can draw around flowing fluid.

2. 2.

   State Bernoulli’s equation.

   Hint

   Recall that it involves energy terms related to height, velocity, and pressure.

3. 3.

   What does the control volume help to analyze?

   • Temperature changes
   • Mass and energy conservation
   • Fluid color changes

   Hint

   Focus on what properties are conserved in fluid mechanics.

4. 4.

   Bernoulli's equation states that energy cannot be created or destroyed; it can only be:

   • True
   • False

   Hint

   Think about energy flows in closed systems.

5. 5.

   Calculating the water surface elevation at point 2 when the water flows from depth 2.3 feet downstream a ramp and the ramp height is 0.5 feet with a flow rate of 5.75 ft²/s.

   Hint

   Make use of energy conservation principles.

6. 6.

   Design a channel section to maintain subcritical flow given a specific flow rate and ramp condition. Discuss the parameters necessary to guarantee stability.

   Hint

   Refer to specific energy diagrams to foresee flow behaviors.