21.4.1. Summary of Topics Discussed

Try these first

1. 1.

   Define major head loss.

   Hint

   Think about where friction occurs in a long fluid movement.

2. 2.

   What is the purpose of the Darcy-Weisbach equation?

   Hint

   Recall that it involves pipe length and diameter.

3. 3.

   What does major head loss result from?

   • Friction
   • Minor Losses
   • Pipe Diameter

   Hint

   Think about where energy is lost in long distances.

4. 4.

   True or False: Minor head losses can be ignored in long pipelines where friction is the main component.

   • True
   • False

   Hint

   Recall your examples of fittings and valves.

5. 5.

   You have a pipeline that runs 1000 meters with a diameter of 0.2 meter. It's carrying fluid at 3 m/s, with a friction factor of 0.01. Determine the major head loss and its impact on the pressure at the end of the pipeline.

   Hint

   Be careful to convert the units properly!

6. 6.

   In a system where the entrance loss coefficient is 0.5, exit loss is negligible, and we've established major head loss is 10m. What total head loss needs compensating to maintain a discharge rate of 20L/s?

   Hint

   Involve Bernoulli's equation to see discharge relationships!