2.2. Control Volume

Try these first

1. 1.

   Define a control volume in fluid mechanics.

   Hint

   What does it allow us to analyze?

2. 2.

   What does the continuity equation represent?

   Hint

   Think about conservation.

3. 3.

   What is a control volume used for?

   • To calculate temperature of fluid
   • To analyze fluid flow properties
   • To measure fluid viscosity

   Hint

   Remember its purpose in fluid analysis.

4. 4.

   True or False: The Reynolds transport theorem connects system changes to control surface flow.

   • True
   • False

   Hint

   Think about how properties change in time and space.

5. 5.

   A cylindrical tank has a diameter of 3m and a height of 5m. Water is flowing out at a rate of 10 liters per second. Calculate how fast the water level is dropping.

   Hint

   Relate the flow out to the height change.

6. 6.

   A water jet strikes a flat surface at a velocity of 15 m/s. If the jet has a diameter of 0.1m, calculate the force exerted on the surface.

   Hint

   Consider momentum change because the water comes to rest on impact.