Water flows through a 15.24m long, 1.6cm diameter hose.
pressure at the outdoor tap = 275.8kPa
volumetric flowrate, Q = 7.5e-4 m^3/s (i.e. 7.5L for 10 seconds)
viscosity of water, μ = 0.001 Pa*s
density of water, ρ = 1000 kg/m^3
Look for: the roughness of the hose
The Attempt at a Solution
I have calculated Renolds number = 7958 ==> turbulent flow
I used Darcy equation and found out the friction factor, f, is great than 1.
I am confused and stuck here.
I must have used the wrong formula or missed some important steps.
Please help me by providing some advice, double checking my work or giving some steps would be greatly appreciated!