3. Another Problem

Try these first

1. 1.

   Define the term 'Friction Factor'.

   Hint

   What role does it play in hydraulics?

2. 2.

   What is Reynolds Number?

   Hint

   What does it signify in fluid flow?

3. 3.

   What is the main function of the friction factor in hydraulics?

   • Calculate head loss
   • Determine fluid density
   • Estimate pipe diameter

   Hint

   Think about what affects energy in fluid systems.

4. 4.

   True or False: The Moody Chart can only be used for turbulent flow.

   • True
   • False

   Hint

   Recall the definitions of flow types.

5. 5.

   Given a pipe diameter of 0.5 m, with a roughness of ε=0.03 mm, and a flow rate of 10 m³/s, calculate the head loss across a length of 500 m. Discuss how variations in ε would affect your calculations.

   Hint

   Focus first on velocity calculation to proceed further.

6. 6.

   A drawn tubing has an internal diameter of 4 mm. If the air flowing at 20°C has a viscosity of 1.81x10^-5 N.s/m². Calculate the pressure drop for laminar and turbulent conditions given V = 2 m/s.

   Hint

   Begin by determining if the flow condition is laminar or turbulent first.