5) Which statement is true about the friction factor in the Moody diagram (shown below). Moody Diagram Transition Region 0.05 0.04 0.03 0.02 0.015 0.01 0.005 0.002 0.001 5x10-4 2x10-45 10-4 5x10-5 Friction Factor 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 Laminar Flow 64 Material E (mm) Concrete, coarse 0.025 Concrete, new smooth Drawn tubing 0.0025 Glass, Plastic Perspex 0.0025 Iron, cast 0.15 Sevens, old 3.0 Steel, murtat lined 0.1 Steel, rusted 0.5 0.025 Stoel, structural or forged Water mains, old Friction Factor= VAP. 1.0 Smooth Pipe 10³ 10⁰ 105 106 107 108 Reynolds Number, Re= pVd f a) The lines for different relative roughness in the turbulent regime correspond to Darcy-Weisbach model b) The lines for different relative roughness in the turbulent regime correspond to Nikuradse model c) The lines for different relative roughness in the turbulent regime correspond to Hazen-Williams model d) The lines for different relative roughness in the turbulent regime correspond to Colebrook model 0.02 0.015 0.01 Complete Turbulence; 10-5 5x10-6 10-6 Relative Pipe Roughness

Elements Of Electromagnetics
7th Edition
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5) Which statement is true about the friction factor in the Moody diagram (shown
below).
Moody Diagram
0.1
0.09
Transition Region
0.08
0.07
0.05
0.04
0,06
0.03
0.05
0.02
0.04
0.015
0.01
0.03
0.005
0.002
0.001
5x10-4
2x10-49
10-4
5x10-5
10-5
5x10-6
10-6
Friction Factor
12----
Laminar Flow
64
Material
Concrete, coarse
0.25
0.025
Concrete, new smooth
Drawn tubing
0.0025
Glass, Plastic Perspex
0.0025
Iron, cast
0.15
Sevens, old
3.0
0.1
Steel, mortar lined
Steel, rusted
0.5
Stoel, structural or forgod 0.025
Water mains, old
Friction Factor=AP.
1.0
Smooth Pipe
3000
10³
10¹
105
106
107
108
Reynolds Number, Re - Vd
P
a) The lines for different relative roughness in the turbulent regime correspond to
Darcy-Weisbach model
b) The lines for different relative roughness in the turbulent regime correspond to
Nikuradse model
c) The lines for different relative roughness in the turbulent regime correspond to
Hazen-Williams model
d) The lines for different relative roughness in the turbulent regime correspond to
Colebrook model
0.02
0.015
0.01
(mm)
Complete Turbulence;
Relative Pipe Roughness
Transcribed Image Text:5) Which statement is true about the friction factor in the Moody diagram (shown below). Moody Diagram 0.1 0.09 Transition Region 0.08 0.07 0.05 0.04 0,06 0.03 0.05 0.02 0.04 0.015 0.01 0.03 0.005 0.002 0.001 5x10-4 2x10-49 10-4 5x10-5 10-5 5x10-6 10-6 Friction Factor 12---- Laminar Flow 64 Material Concrete, coarse 0.25 0.025 Concrete, new smooth Drawn tubing 0.0025 Glass, Plastic Perspex 0.0025 Iron, cast 0.15 Sevens, old 3.0 0.1 Steel, mortar lined Steel, rusted 0.5 Stoel, structural or forgod 0.025 Water mains, old Friction Factor=AP. 1.0 Smooth Pipe 3000 10³ 10¹ 105 106 107 108 Reynolds Number, Re - Vd P a) The lines for different relative roughness in the turbulent regime correspond to Darcy-Weisbach model b) The lines for different relative roughness in the turbulent regime correspond to Nikuradse model c) The lines for different relative roughness in the turbulent regime correspond to Hazen-Williams model d) The lines for different relative roughness in the turbulent regime correspond to Colebrook model 0.02 0.015 0.01 (mm) Complete Turbulence; Relative Pipe Roughness
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