17.2.5. Head Loss in Pipes

Try these first

1. 1.

   What is head loss in pipes?

   Hint

   Think about what happens to energy when fluid moves through a pipe.

2. 2.

   Define laminar flow.

   Hint

   Consider how the layers of fluid move in relation to each other.

3. 3.

   What is head loss in fluid mechanics?

   • Energy loss from fluid
   • Increase in pressure
   • Magnitude of fluid speed

   Hint

   Think about the effects of friction.

4. 4.

   True or False: Reynolds number above 4000 definitively indicates laminar flow.

   • True
   • False

   Hint

   What happens at the transition threshold?

5. 5.

   A fluid flows through a 0.1 m diameter pipe at 1.5 m/s with a viscosity of 0.002 Pa·s. Is the flow laminar or turbulent? Calculate the Reynolds number.

   Hint

   Remember the factors in the Reynolds number.

6. 6.

   Design a piping system for a building that minimizes head loss while ensuring adequate pressure. Consider flow rates and pipe diameter.

   Hint

   How does pipe diameter affect friction?