15.5.3. Conservation of Energy

Try these first

1. 1.

   Define conservation of mass in fluid dynamics.

   Hint

   Think about mass flows in and out of a system.

2. 2.

   What does a fixed control volume imply?

   Hint

   Consider examples of control surfaces.

3. 3.

   What does the conservation of mass state?

   • Mass can be created.
   • Mass is conserved in a closed system.
   • Mass can be destroyed.

   Hint

   Consider the flow of mass in a closed system.

4. 4.

   True or False: Reynolds transport theorem relates system properties to control volume properties.

   • True
   • False

   Hint

   Think about the connection it creates.

5. 5.

   Design a simple experiment to demonstrate mass conservation using two tanks connected by a pipe, measuring the flow in and out.

   Hint

   Make observations on water levels and flow rates.

6. 6.

   Analyze a scenario where an airplane burns fuel during flight. Discuss how mass conservation applies as the airplane's weight changes.

   Hint

   Consider the mass balance throughout the flight duration.