15.4.4. Deformable Control Volume

Try these first

1. 1.

   What are the three types of control volumes?

   Hint

   Think about how each volume interacts with the fluid.

2. 2.

   Define a fixed control volume.

   Hint

   Consider its behavior over time.

3. 3.

   What does a fixed control volume do?

   • It remains stationary
   • It can move
   • It changes shape

   Hint

   Think about the definition of 'fixed'.

4. 4.

   True or False: A deformable control volume maintains its shape.

   • True
   • False

   Hint

   Remember the term 'deformable' indicates change.

5. 5.

   In a tank, water flows in at a rate of 5 L/min and flows out at 3 L/min. If the initial volume of water is 50 L, what is the volume after 10 minutes?

   Hint

   Use mass balance principles to find the final volume.

6. 6.

   Discuss how the conservation of mass is applied in environmental engineering, particularly in wastewater treatment.

   Hint

   Consider inflow and outflow in your answer.