Fox and McDonald's Introduction to Fluid Mechanics
9th Edition
ISBN: 9781118912652
Author: Philip J. Pritchard, John W. Mitchell
Publisher: WILEY
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Textbook Question
Chapter 8, Problem 110P
The flow of water through a 150-mm-diameter horizontal pipe that enlarges abruptly to 300 mm diameter, is 0.14 m3/s. The pressure in the smaller pipe is 138 kPa. Calculate the pressure in the 300-mm-diameter pipe, neglecting pipe friction.
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Water is pumped at a rate of 24.33 m/s from tank (A) and out through a 298.05 m pipe to tank (B). The surface roughness of the pipe is 0.046 mm. When the water levels are as shown in the given figure, the
head provided by the pump is 70.54 m. Calculate the pipe diameter (mm) if the water temperature is 10°C (do not assume the water mass density and the viscosity). Use f = 0.02 for the first iteration and try
only one more iterations (two in total) by using Swamee and Jain formula.
Elevation
Elevatjon -
= 140 m
= 135 m
Tank (B)
Elevation
= 100 m
Tank (A)
pump
Elevation = 95 m
Water is transported in a pipe, at an average
flow rate of Q = 50 L/s. Calculate the pressure
difference p between the 2 manometers. We
can assume that the energy losses by friction are
negligible, and that there are only singular
energy losses (be careful to identify ALL the
singularities). The pump adds an energy of HP =
10 m to the system.
"GATE VALVE"
P2
OUVERTURE COMPLÈTE
do = 150 mm
Q = 50 L/s
• 2)
2 m
Q = 50 L/s
COUDES À
POMPE
RAYONS COURTS
do = 150 mm
(Hp = 10 m)
4.
A pipe carries oil of density 800 kg/m³. At a given point (1) the pipe has a bore area of
0.005 m² and the oil flows with a mean velocity of 4 m/s with a gauge pressure of 800 kPa.
Point (2) is further along the pipe and there the bore area is 0.002 m² and the level is 50 m
above point (1). Calculate the pressure at this point (2). Neglect friction. (374 kPa)
Chapter 8 Solutions
Fox and McDonald's Introduction to Fluid Mechanics
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