21.4. Concluding Remarks

Try these first

1. 1.

   What is a major head loss?

   Hint

   Think about where the most resistance occurs in a pipe.

2. 2.

   How do you define minor losses?

   Hint

   Consider what happens when the flow direction changes.

3. 3.

   What is the primary cause of major head losses?

   • Friction
   • Bends
   • Valves

   Hint

   Consider where most resistance occurs.

4. 4.

   True or False: Minor losses only occur in straight pipes.

   • True
   • False

   Hint

   Think about what happens at junctions or bends.

5. 5.

   A pipeline with a diameter of 0.5m is 4000m long with a friction factor of 0.02. Calculate the major head loss using the Darcy-Weisbach equation.

   Hint

   Remember to compute area and velocity from discharge first.

6. 6.

   A valve in a pipeline causes a minor loss coefficient of K = 3. If the flow velocity is 3 m/s, calculate the minor head loss.

   Hint

   You’ll need to know gravitational acceleration for this calculation.