Fluid Mechanics: Fundamentals and Applications
4th Edition
ISBN: 9781259696534
Author: Yunus A. Cengel Dr., John M. Cimbala
Publisher: McGraw-Hill Education
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Chapter 5, Problem 103P
Water flows at a rate of 0.011 m3/s in a horizontal pipe whose diameter increases from 6 to 11 cm by an enlargement section. If the head loss across the enlargement section is 0.6$ m and the kinetic energy correction factor at both the inlet and the outlet is 1.05, determine the pressure change.
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6 cm
9 cm
Water
7 m/s
150 kPa
Gradual Expansion and Contraction (based on the velocity in the smaller-diameter pipe)
Expansion:
K = 0.02 for 0 = 20°
K = 0.04 for 0 = 45°
K = 0.07 for 0 = 60°
Contraction (for 0 = 20°):
K = 0.30 for d/D = 0.2
K = 0.25 for dlD = 0.4
K, = 0.15 for diD = 0.6
K = 0.10 for dlD = 0.8
%3D
-v d
d
%3D
Gasoline (r = 680 kg/m3 and n = 4.29 3 1027 m2/s) is transported at a rate of 240 L/s for a distance of 2 km. The surface roughness of the piping is 0.03 mm. If the head loss due to pipe friction is not to exceed 10 m, determine the minimum diameter of the pipe.
Chapter 5 Solutions
Fluid Mechanics: Fundamentals and Applications
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