Problem 8 [Marks 1.5]

A pipeline transporting engine oil of 3.5 m³/s at 40°C

branches out into two parallel pipes made of

commercial steel but reconnects downstream. Pipe A

is 750 m long and has a diameter of 50 cm while Pipe

B is 1200 m long with a diameter of 50 cm.

Neglecting minor losses, determine the following:

Oil

equation).

b) Actual head losses (in m) in pipe A and pipe B.

1.5 m³/s

A

50 cm

B

750m

a) Flow rates (in m³/s) through pipe A and pipe B.

(Hint: Assume similar flow frictional factor for

initial calculations and determine the correct frictional factor using Colebrook

50 cm

1200 m