21.3.1. Single Inlet and Outlet Conditions

Try these first

1. 1.

   What does the momentum flux correction factor (β) represent?

   Hint

   Think about the differences in velocity across a cross-section.

2. 2.

   Define laminar flow.

   Hint

   Consider the Reynolds number value.

3. 3.

   What is the momentum flux correction factor (β) primarily used for?

   • To calculate pressure
   • To adjust for non-uniform velocity distributions
   • To measure flow rate

   Hint

   Consider when you're dealing with varying velocities across a cross-section.

4. 4.

   True or False: In laminar flow, the value of β is approximately 1.

   • True
   • False

   Hint

   Recall the classic definitions of flow regimes.

5. 5.

   A pipe has a diameter of 0.5m at the entrance and 0.2m at the exit. Water flows through the pipe at a speed of 5m/s at the entrance. Calculate the speed at the exit.

   Hint

   Use the area of the circular cross-section to compute A.

6. 6.

   1L of water flows into a tank with a 0.1 m² cross-section. If the height of the water rises 0.5 meters, what is the inlet velocity needed to achieve this rise in 2 seconds?

   Hint

   Remember to convert cubic meters to liters when necessary.