1.14. Calculating Head Loss in Pipes

Try these first

1. 1.

   Define head loss in the context of fluid flow.

   Hint

   Think about energy transformation as fluid moves through pipes.

2. 2.

   What is the K coefficient for a sudden enlargement?

   Hint

   Consider the impact of area change on velocity.

3. 3.

   What is the common assumption for the K coefficient at pipe entrances?

   • 0.5
   • 1
   • 0.04

   Hint

   Consider the standard configurations discussed in class.

4. 4.

   Head loss at sudden enlargement is generally higher than at gradual enlargement. True or False?

   • True
   • False

   Hint

   Reflect on the differences in flow characteristics.

5. 5.

   A water system has a pipe section with an entrance K equal to 0.5, followed by a sudden enlargement to a diameter double its original size. If the inlet speed is 1.5 m/s, calculate the total head loss when water exits this system.

   Hint

   Use both the entrance loss formula and sudden enlargement loss together.

6. 6.

   Calculate head loss for a pipe with an inner diameter of 0.3 m encountering two sharp bends with a K value of 1.5 each, assuming water flows at 2 m/s.

   Hint

   Consider the impact of each bend as a separate loss.