17.3.2. Flow Classification

Try these first

1. 1.

   What is the Mach number threshold for assuming incompressible flow?

   Hint

   Think about the speed of sound.

2. 2.

   Define volumetric flux.

   Hint

   It's about the flow rate like Q = A * V.

3. 3.

   What is incompressible flow?

   • Flow where density changes significantly
   • Flow where density remains constant
   • Flow with high Mach number

   Hint

   Consider the conditions under which density is treated as constant.

4. 4.

   True or False: The Mach number must be greater than 0.3 for flow to be incompressible.

   • True
   • False

   Hint

   Think about how speed affects density in fluids.

5. 5.

   Given a scenario where flow through a pipe has varying diameters but the Mach number stays below 0.3, predict how velocity changes and apply it to find resulting mass flow rates.

   Hint

   Remember: Calculate cross-sectional area appropriately for each pipe segment.

6. 6.

   In a tank with two inflows and one outflow, evaluate how the height of the liquid changesover time based on inflow rates, assuming constant density and flow rates.

   Hint

   Set up mass balance equations using control volumes to model height change.