Fluid Mechanics Fundamentals And Applications
3rd Edition
ISBN: 9780073380322
Author: Yunus Cengel, John Cimbala
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 14, Problem 56EP
For the duct system and fan of Prob. 14—55E, partially closing the damper would decrease the flow rate. All else being unchanged, estimate the minor loss coefficient of the damper required to decrease the volume flow rate by a factor of
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What are the control hardware shown in the Figure?
Question 1.
A tube rotates in the horizontal ry plane with a constant angular velocity w about the z-axis. A
particle of mass m is released from a radial distance R when the tube is in the position shown.
This problem is based on problem 3.2 in the text.
R
m
2R
Figure 1
x
a) Draw a free body diagram of the particle if the tube is frictionless.
b) Draw a free body diagram of the particle if the coefficient of friction between the sides of the
tube and the particle is = k = p.
c) For the case where the tube is frictionless, what is the radial speed at which the particle
leaves the tube?
d) For the case where there is friction, derive a differential equation that would allow you to
solve for the radius of the particle as a function of time. I'm only looking for the differential
equation. DO NOT solve it.
1
e) If there is no friction, what is the angle of the tube when the particle exits?
• Hint: You may need to solve a differential equation for the last part. The "potentially
useful…
Question 2.
A smooth uniform sphere of mass m and radius r is squeezed between two massless levers, each of
length 1, which are inclined at an angle with the vertical. A mechanism at pivot point O ensures
that the angles & remain the same at all times so that the sphere moves straight upward. This
problem is based on Problem 3-1 in the text.
P
P
r
Figure 2
a) Draw appropriate freebody diagrams of the system assuming that there is no friction.
b) Draw appropriate freebody diagrams of the system assuming that there is a coefficient of
friction between the sphere and the right lever of μ.
c) If a force P is applied between the ends of the levers (shown in the diagram), and there is no
friction, what is the acceleration of the sphere when = 30°
Chapter 14 Solutions
Fluid Mechanics Fundamentals And Applications
Ch. 14 - List at least two common examples of fans, of...Ch. 14 - What are the primary differences between fans,...Ch. 14 - Prob. 3CPCh. 14 - Explain why there is an “extra” term in the...Ch. 14 - Explain why there is an “extra” term in the...Ch. 14 - Prob. 6CPCh. 14 - Prob. 7CPCh. 14 - An air compressor increases the pressure (PoutPin)...Ch. 14 - Prob. 9PCh. 14 - Prob. 10CP
Ch. 14 - Prob. 11CPCh. 14 - Prob. 12CPCh. 14 - There are three main categories of dynamic pumps....Ch. 14 - Consider flow through a water pump. For each...Ch. 14 - Prob. 15CPCh. 14 - Prob. 16CPCh. 14 - Prob. 17CPCh. 14 - Prob. 18CPCh. 14 - Prob. 19CPCh. 14 - Prob. 20PCh. 14 - Prob. 21PCh. 14 - Prob. 22PCh. 14 - Consider the flow system sketched in Fig....Ch. 14 - Prob. 24PCh. 14 - Repeat Prob. 14-25, but with a rough pipe-pipe...Ch. 14 - The performance data for a centrifugal water pump...Ch. 14 - Suppose the pump of Probs. 14-29 and 14-30 is used...Ch. 14 - The performance data for a centrifugal water pump...Ch. 14 - Prob. 32PCh. 14 - Prob. 34PCh. 14 - The performance data of a water pump follow the...Ch. 14 - For the application at hand, the how rate of Prob....Ch. 14 - A water pump is used to pump water from one large...Ch. 14 - For the pump and piping system of Prob. 14-35E,...Ch. 14 - A water pump is used to pump water from one large...Ch. 14 - Calculate the volume flow rate between the...Ch. 14 - Comparing the resu1t of Probs. 14—43 and 14—47,the...Ch. 14 - Repeat Prob. 14—43, but neglect all minor losses....Ch. 14 - A local ventilation system (a hood and duct...Ch. 14 - The performance data for a centrifugal water pump...Ch. 14 - Transform each column of the pump performance data...Ch. 14 - A local ventilation system (a hood and duct...Ch. 14 - For the duct system and fan of Prob. 14—55E,...Ch. 14 - Repeat Prob. 14—55E. Ignoring all minor losses....Ch. 14 - 14-51 A local ventilation system (a hood and duct...Ch. 14 - The two-lobe rotary pump of Fig. P14-63E moves...Ch. 14 - Prob. 64EPCh. 14 - Prob. 65PCh. 14 - Prob. 66PCh. 14 - A centrifugal pump rotates at n=750rpm . Water...Ch. 14 - Prob. 68PCh. 14 - Suppose the pump of Prob. I 4—67 has some reverse...Ch. 14 - Prob. 70PCh. 14 - Prob. 71PCh. 14 - Prob. 72PCh. 14 - Prob. 73CPCh. 14 - Name and briefly describe the differences between...Ch. 14 - Discuss the meaning of reverse swirl in reaction...Ch. 14 - Prob. 76CPCh. 14 - Prob. 77PCh. 14 - Prob. 78PCh. 14 - Prob. 79PCh. 14 - Prob. 80PCh. 14 - Prob. 81PCh. 14 - Wind (=1.204kg/m3) blows through a HAWT wind...Ch. 14 - Prob. 83PCh. 14 - Prob. 85PCh. 14 - Prob. 86EPCh. 14 - Prob. 88PCh. 14 - Prob. 89PCh. 14 - Prob. 90EPCh. 14 - The average wind speed at a proposed HAWT wind...Ch. 14 - Prob. 92CPCh. 14 - Prob. 93CPCh. 14 - Discuss which dimensionless pump performance...Ch. 14 - Prob. 95PCh. 14 - Prob. 96PCh. 14 - Prob. 97PCh. 14 - Prob. 98PCh. 14 - Prob. 99PCh. 14 - Prob. 100PCh. 14 - Prob. 101PCh. 14 - Prob. 102PCh. 14 - Prob. 103PCh. 14 - Prob. 104PCh. 14 - Prob. 105PCh. 14 - Prob. 106PCh. 14 - Prob. 107PCh. 14 - Prob. 108PCh. 14 - Prob. 109PCh. 14 - Prob. 110PCh. 14 - Prob. 111PCh. 14 - Prob. 112PCh. 14 - Prob. 114PCh. 14 - Prob. 115PCh. 14 - Prove that the model turbine (Prob. 14—114) and...Ch. 14 - In Prob. 14—116, we scaled up the model turbine...Ch. 14 - Prob. 118PCh. 14 - Prob. 119PCh. 14 - Prob. 120PCh. 14 - For two dynamically similar pumps, manipulate the...Ch. 14 - Prob. 122PCh. 14 - Prob. 123PCh. 14 - Prob. 124PCh. 14 - Calculate and compare the turbine specific speed...Ch. 14 - Which turbomachine is designed to deliver a very...Ch. 14 - Prob. 127PCh. 14 - Prob. 128PCh. 14 - Prob. 129PCh. 14 - Prob. 130PCh. 14 - Prob. 131PCh. 14 - Prob. 132PCh. 14 - Prob. 133PCh. 14 - Prob. 134PCh. 14 - Prob. 135PCh. 14 - Prob. 136PCh. 14 - Prob. 137PCh. 14 - The snail-shaped casing of centrifugal pumps is...Ch. 14 - Prob. 139PCh. 14 - Prob. 140PCh. 14 - Prob. 141PCh. 14 - Prob. 142PCh. 14 - Prob. 143PCh. 14 - Prob. 144PCh. 14 - Prob. 145PCh. 14 - Prob. 146PCh. 14 - Prob. 147PCh. 14 - Prob. 148PCh. 14 - Prob. 149PCh. 14 - Prob. 150PCh. 14 - Prob. 151PCh. 14 - Prob. 152P
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