4.1.6. Steady Compressible Flow

Try these first

1. 1.

   What is the basic principle of mass conservation in fluid mechanics?

   Hint

   Think about how fluids behave in control volumes.

2. 2.

   Define incompressible flow.

   Hint

   Look for the key difference in density behavior.

3. 3.

   What is the principle of mass conservation?

   • Mass can be created
   • Mass must remain constant
   • Mass can disappear

   Hint

   Think about the laws of physics regarding mass.

4. 4.

   Incompressible flow means density is?

   • True
   • False

   Hint

   Remember the characteristics of incompressible versus compressible flow.

5. 5.

   A cylindrical tank is filled with water and has a hole at the bottom through which water exits. Describe how you would apply mass conservation to determine how the water level changes over time.

   Hint

   Make sure to set up your control volume correctly.

6. 6.

   For a gas flowing through a converging nozzle, derive the change in density as the velocity increases.

   Hint

   Identify relationships between pressure changes and velocity.