Acertain part of cast iron piping of a water distribution system involves a parallel section. both parallel pipes have a diameter of 30 cm, and the flow is fully turbulent. one of the branches (pipe a) is 1500 m long, while the other branch (pipe b) is 2700 m long. if the flow rate through pipe a is 0.4 m3/s, determine the flow rate through pipe b. disregard minor losses and assume the water temperature to be 15°c. is the flow turbulent or laminar? is the friction factor dependent or independent of the reynold's number? the density and dynamic viscosity of water at 15°c are ρ = 999.1 kg/m3 and μ = 1.138 × 10–3 kg/m·s. the roughness of the cast iron pipe is ε = 0.00026 m. the flow rate through pipe b is m3/s. the flow is , and thus the friction factor is of the reynolds number.