21.6. Conclusion

Try these first

1. 1.

   What is the purpose of the momentum flux correction factor?

   Hint

   Think about how flow types affect measurements.

2. 2.

   Define a sluice gate.

   Hint

   Relate it to methods of managing water flow.

3. 3.

   What does the beta factor indicate in laminar flow?

   • Equal to 1
   • One-third the average velocity
   • Two-thirds the average velocity

   Hint

   Think about the values used when calculating for average distributions.

4. 4.

   True or False: The control volume concept is irrelevant in fluid mechanics.

   • True
   • False

   Hint

   Recall the purpose of defining a control volume in fluid studies.

5. 5.

   Given a sluice gate with h1 = 12m, h2 = 5m, and the water jet has a density of 1000kg/m³ at an average velocity of 2m/s, calculate the force on the gate.

   Hint

   Look for hydrostatic pressure differences due to height.

6. 6.

   Analyze a flat plate experiencing a width of 1m and hit by a jet of water with a 15mm diameter, velocity 10m/s, find the exerted force.

   Hint

   An area from diameter calculation will guide you toward the momentum force.