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F00 mm, rough luid in the pipe btained from t what is the % er

F00 mm, rough luid in the pipe btained from t what is the % er

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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3. Use the Moody diagram to find the shear stress and major loss in a pipe with a diameter of 600 mm, roughness e of 0.6 mm and length of 2500 m. The discharge is 450 L/s and the fluid in the pipe is air (p = 1.25 kg/m' and v = 1.5 x 10° m/s). Compare the friction value obtained from the Moody diagram with the value obtained from the friction equations and what is the % error. The Moody Chart 0.1 0.09 Laminar Transitional Turbulent flow flow flow 0.08 Fully rough turbulent flow (flevels off) 0,07 0.05 0.04 0.06 0.03 0.05 0.02 0.015 0.04 0.01 0.008 0.006 0.03 0.004 0.025 0.002 0.02 0.001 0.0008 0.0006 Roughness, e Material ft mm 0.0004 0.015 Glass, plastic Concrete Wood stave 0.003-0.03 0.9-9 Smooth pipes 0.0002 0.0016 0.5 0.000033 0.00000S 0.00085 0.0005 Rubber, smoothed 01 eD = 0 Copper or brass tubing Cast iron 0.0015 0.0001 0.26 0.01 Galvanized iron Wrought iron 0.00005 0.15 0.00015 0.046 eD = 0,000005 0.009 Stainless steel Commercial steel 0.000007 0.00015 0.002 0.045 leD = 0.000001 0.00001 103 2(10) 3 4 56 8 104 2(10) 3 4 56 8 105 2(10) 3 4 56 8 106 2(10) 3 4 5 6 8 107 2(10) 3 4 56 8 108 0.008 Reynolds number, Re Darcy friction factor,f Relative roughness, elD
Transcribed Image Text:3. Use the Moody diagram to find the shear stress and major loss in a pipe with a diameter of 600 mm, roughness e of 0.6 mm and length of 2500 m. The discharge is 450 L/s and the fluid in the pipe is air (p = 1.25 kg/m' and v = 1.5 x 10° m/s). Compare the friction value obtained from the Moody diagram with the value obtained from the friction equations and what is the % error. The Moody Chart 0.1 0.09 Laminar Transitional Turbulent flow flow flow 0.08 Fully rough turbulent flow (flevels off) 0,07 0.05 0.04 0.06 0.03 0.05 0.02 0.015 0.04 0.01 0.008 0.006 0.03 0.004 0.025 0.002 0.02 0.001 0.0008 0.0006 Roughness, e Material ft mm 0.0004 0.015 Glass, plastic Concrete Wood stave 0.003-0.03 0.9-9 Smooth pipes 0.0002 0.0016 0.5 0.000033 0.00000S 0.00085 0.0005 Rubber, smoothed 01 eD = 0 Copper or brass tubing Cast iron 0.0015 0.0001 0.26 0.01 Galvanized iron Wrought iron 0.00005 0.15 0.00015 0.046 eD = 0,000005 0.009 Stainless steel Commercial steel 0.000007 0.00015 0.002 0.045 leD = 0.000001 0.00001 103 2(10) 3 4 56 8 104 2(10) 3 4 56 8 105 2(10) 3 4 56 8 106 2(10) 3 4 5 6 8 107 2(10) 3 4 56 8 108 0.008 Reynolds number, Re Darcy friction factor,f Relative roughness, elD
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