Case 05: Water - Flow Rate at 40 psi Outlet Point
Reference: Hydraulics of Pipeline Systems, 2000, CRC Press LLC, Bruce E. Larock, Rowland W. Jeppson, Gary Z. Watters, Page 218, Example problem 5.17
Pipe Flow Expert File: Case_05_Water_Flow_Rate_At_40psi_Outlet_Point.pfe
Problem Description:
A pipeline consists of two cast iron asphalt lined pipes.
One pipe is 8” diameter x 3000 ft long and the other pipe is 6” diameter x 3500 ft long.
The water source has a surface elevation of 165 ft.
An off-take at the joint between the two pipes removes 0.5 ft³/s of water from the pipeline.
The pressure at the outlet from the 6” diameter pipe is 40 psi.
Calculate the flow rate in the 8” diameter pipe and the flow rate from the outlet of the 6” diameter pipe.
Fluid Data: Water at 62° F.
Result Comparison:
|
Data Item |
Published data |
Pipe Flow Expert |
|
Flow rate in 8” diameter pipe (ft³/s) |
1.438 |
1.4372 |
|
Flow rate leaving 6” diameter pipe (ft³/s) |
0.938 |
0.9372 |
Commentary:
The published data and the calculated results compare well.