5. Water at 15°C (p = 999.1 kg/m³ and µ = 1.138 × 10¯³ kg/m-s) is flowing steadily in a 30-m-long and 6-cm-diameter horizontal pipe made of stainless steel at a rate of 10 L/s. Determine (a) the pressure drop, (b) the head loss, and (c) the pumping power requirement to overcome this pressure drop. Assume the entrance effects are negligible, and thus the flow is fully developed. Take the roughness of stainless steel as 0.002 mm. 10 L/s 30 m 6 cm

5. Water at 15°C (p = 999.1 kg/m³ and µ = 1.138 × 10¯³ kg/m-s) is flowing steadily in a 30-m-long and 6-cm-diameter horizontal pipe made of stainless steel at a rate of 10 L/s. Determine (a) the pressure drop, (b) the head loss, and (c) the pumping power requirement to overcome this pressure drop. Assume the entrance effects are negligible, and thus the flow is fully developed. Take the roughness of stainless steel as 0.002 mm. 10 L/s 30 m 6 cm

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?

Question

5. Water at 15°C (p = 999.1 kg/m³ and µ = 1.138 × 10¯³ kg/m-s) is flowing steadily in a 30-m-long
and 6-cm-diameter horizontal pipe made of stainless steel at a rate of 10 L/s. Determine (a) the
pressure drop, (b) the head loss, and (c) the pumping power requirement to overcome this pressure
drop. Assume the entrance effects are negligible, and thus the flow is fully developed. Take the
roughness of stainless steel as 0.002 mm.
10 L/s
30 m
6 cm

f
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.025
0.02
0.015
0.01
0.009
0.008
Laminar
flow
10³
1
1
---
Transition range
2(10³) 468
104
Moody Chart
Wholly turbulent flow
Smooth
2(104) 4 6 8
105
2(105) 4 68
Re=
pVD
μ
106
2(106) 4 6 8
107
2(107) 4 6 8
0.05
0.04
0.03
0.02
0.015
0.01
0.008
0.006
0.004 D
0.002
0.001
0.0008
0.0006
0.0004
0.0002
0.0001
0.00005
0.00001

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