Case 30: Water - Reynolds Number for Smooth Wall Pipe
Reference: Flow of Fluids – Technical Paper No 410, 1988, Crane Co. Page 4-1, Example 4-1.
Pipe Flow Expert File: Case_30_Water_Reynolds_Number_For_Smooth_Wall_Pipe.pfe
Problem Description:
A 70 foot long 2” diameter plastic pipe (smooth wall) carries water at 80°F. The flow rate is 50 gpm (US).
Find the Reynolds number and the friction factor.
Fluid Data: Water at 80°F
Result Comparison:
|
Data Item |
Published data |
Pipe Flow Expert |
|
Reynolds number |
89600 |
89702 |
|
Friction factor |
0.0182 |
0.0188 |
Commentary:
The published data and the calculated results compare well.
Pipe Flow Expert uses the same fluid density and viscosity as the published text to calculate the Reynolds number.
The published text friction factor has been read from a chart for water at 60°F.