20.2.2. Control Volume Considerations

Try these first

1. 1.

   What is a control volume?

   Hint

   Think about where fluid would be analyzed.

2. 2.

   Define mass conservation in fluid dynamics.

   Hint

   Recall the formula A1V1 = A2V2.

3. 3.

   What does a control volume help analyze?

   • Mass and momentum
   • Temperature
   • Volume only

   Hint

   Focus on the definition of control volumes.

4. 4.

   True or False: Energy loss in a fluid system is always negligible.

   • True
   • False

   Hint

   Think about the types of forces acting on fluid.

5. 5.

   Given a system with two different diameter pipes connected consecutively, derive the velocity at point B using Bernoulli’s equation while considering friction losses.

   Hint

   Consider the energy at the two points and how friction alters flow.

6. 6.

   Analyze how changing a gate valve to a globe valve in a fluid system affects overall efficiency and energy loss.

   Hint

   Think about the effect of different shapes on fluid behavior.