1.1. Lecture - 43

Try these first

1. 1.

   Define the Darcy-Weisbach friction factor.

   Hint

   Remember, it relates to head loss in pipes.

2. 2.

   What does Reynolds number signify?

   Hint

   Think about how it affects the flow characteristics.

3. 3.

   What does the Darcy-Weisbach friction factor depend on?

   • Pressure only
   • Reynolds number and relative roughness
   • Temperature

   Hint

   Think of the factors affecting flow in pipes.

4. 4.

   True or False: The Colebrook equation requires an iterative solution.

   • True
   • False

   Hint

   Recall the characteristics of the Colebrook equation.

5. 5.

   A 1500m long pipeline has a diameter of 0.6m. The roughness of the pipe is ε = 0.4mm. If the flow velocity is 1.5 m/s, calculate the estimated head loss using the appropriate formulas for major losses.

   Hint

   Remember to convert units to be consistent!

6. 6.

   An engineer wants to improve flow in a short, 100m pipe with many bends. Assuming minor losses are non-negligible, how would you account for them in your design?

   Hint

   Use kl values based on fittings and configurations you have—each has a different impact!