Fluid Mechanics: Fundamentals and Applications
4th Edition
ISBN: 9781259696534
Author: Yunus A. Cengel Dr., John M. Cimbala
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 5, Problem 35CP
A glass manometer with oil as the working fluid is connected to an air duct as shown in Fig. PS- 35C. Will the oil levels in the manometer be as in Fig. P5-35Ca or b? Explain. What would your response be if the flow direction is reversed?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Cavitation tests are being done on a model pump with an impeller diameter of 20 cm and an
inlet pipe diameter of 8 cm. Pumping water at 80°C and running at 2400 rpm, it is observed
to cavitate when the static pressure at the inlet is 80 kPa and the flow rate is 1800 L/min.
Find the required NPSH of a prototype pump that is 6 times larger and runs at 1000 rpm
while pumping water at the same temperature.
Answer Table
Description
Value
Required NPSH for prototype (m)
Q4.
Water is flowing in AF pipe (Figure 1) at a velocity of 2 m/s and a pressure of 102400 Pa, the pipe length
is 100 m. If the water pressure needs to be at a pressure of 1.6 atm on a lower level. What should be
the different in elevation between the upper and lower levels in order to achieve this pressure? Take
the density of water 1000 kg/m and gravity is 9.81 m/s, consider the energy loss.
Q-4 The apparatus shown in the figure is used to measure the velocity
of air at the center of a duct having a 10 cm diameter. A tube mounted
at the center of the duct has a 2 mm diameter and is attached to one
leg of a slant-tube manometer. A pressure tap in the wall of the duct is
connected to the other end of the slant-tube manometer. The well of
10 cm
the slant-tube manometer is sufficiently large that the elevation of the
fluid in it does not change significantly when fluid moves up the leg of
p= 150 kPa
T = 20°C
the manometer. The air in the duct is at a temperature of 20°C, and
the pressure is 150 kPa. The manometer liquid has a specific gravity
30-
of 0.7, and the slope of the leg is 30°. When there is no flow in the duct,
S = 0.7
the liquid surface in the manometer lies at 2.3 cm on the slanted scale.
When there is flow in the duct, the liquid moves up to 6.7 cm on the
slanted scale. Find the velocity of the air in the duct. Assuming a
uniform velocity profile in the duct,…
Chapter 5 Solutions
Fluid Mechanics: Fundamentals and Applications
Ch. 5 - Does the amount of mass entering a control volume...Ch. 5 - Define mass and volume flow rates. How are they...Ch. 5 - Name four physical quantities that are conserved...Ch. 5 - When is the flow through a control volume steady?Ch. 5 - Consider a device with one inlet and one outlet....Ch. 5 - A hair dryer is basically a duct of constant...Ch. 5 - A garden hose attached with a nozzle is used to...Ch. 5 - Air whose density is 0.082 Ibm/ft3 enters the duct...Ch. 5 - A 0.7$-m3 rigid tank initially contains air whose...Ch. 5 - Consider the flow of an incompressible Newtonian...
Ch. 5 - A desktop computer is to be cooled by a fan whose...Ch. 5 - The minimum fresh air requirement of a residential...Ch. 5 - The ventilating fan of the bathroom of a building...Ch. 5 - Air enters a nozzle steadily at 2.21 kg/m3 and 20...Ch. 5 - Air at 40°C flow steadily through the pipe shown...Ch. 5 - In climates with low night-time temperatures, an...Ch. 5 - What is mechanical energy? How does it differ from...Ch. 5 - Define turbine efficiency, generator efficiency,...Ch. 5 - What is mechanical efficiency? What does a...Ch. 5 - How is the combined pump-motor efficiency of a...Ch. 5 - Prob. 21PCh. 5 - A differential thermocouple with sensors at the...Ch. 5 - Electric power is to be generated by installing a...Ch. 5 - Consider a river flowing toward a lake at an...Ch. 5 - Express the Bernoulli equation in three different...Ch. 5 - What are the three major assumptions used in the...Ch. 5 - Define static, dynamic, and hydrostatic pressure....Ch. 5 - What is streamwise acceleration? How does it...Ch. 5 - What is stagnation pressure? Explain how it can be...Ch. 5 - Define pressure head, velocity head, and elevation...Ch. 5 - How is the location of the hydraulic grade line...Ch. 5 - Prob. 33CPCh. 5 - What is the hydraulic grade line? How does it...Ch. 5 - A glass manometer with oil as the working fluid is...Ch. 5 - The velocity of a fluid flowing in a pipe is to be...Ch. 5 - The water level of a tank on a building roof is 20...Ch. 5 - Prob. 38CPCh. 5 - Prob. 39CPCh. 5 - In a hydroelectric power plant, water enters the...Ch. 5 - A Pitot-static probe is used to measure the speed...Ch. 5 - The air velocity in the duct of a heating system...Ch. 5 - A piezometer and a Pitot tube are tapped into a...Ch. 5 - The diameter of a cylindrical water tank is D0and...Ch. 5 - A siphon pumps water from a large reservoir to a...Ch. 5 - Water flows through a horizontal pipe at a rate of...Ch. 5 - An airplane is flying at an altitude of 10.500 m....Ch. 5 - While traveling on a dirt road, the bottom of a...Ch. 5 - The water in an 8-rn-diameter, 3-rn-high...Ch. 5 - Reconsider Prob. 5-49. Determine how long it will...Ch. 5 - Air at 105 kPa and 37°C flows upward through a...Ch. 5 - Water at 20°C is siphoned from a reservoir as...Ch. 5 - The water pressure in the mains of a city at a...Ch. 5 - A pressurized tank of water has a 10-cm-diameter...Ch. 5 - Air is flowing through a venturi meter whose...Ch. 5 - The water level in a tank is 20 m above the...Ch. 5 - The air velocity in a duct is measured by a...Ch. 5 - In cold climates, water pipes may freeze and burst...Ch. 5 - Prob. 61PCh. 5 - A fluid of density and viscosity flows through a...Ch. 5 - What is the minimum diameter at section (1) to...Ch. 5 - What is irreversible head loss? How is it related...Ch. 5 - What is useful pump head? How is it related to the...Ch. 5 - Consider the steady adiabatic flow of an...Ch. 5 - Consider the steady adiabatic flow of an...Ch. 5 - What is the kinetic energy correction factor? Is...Ch. 5 - The water level in a tank is 20 m above the...Ch. 5 - A 3-rn-high tank filled with water has a discharge...Ch. 5 - A person is filling a knee-high bucket with water...Ch. 5 - Tater is being pumped from a large lake to a...Ch. 5 - A 15-hp (shaft) pump is used to raise water to a...Ch. 5 - Water flows at a rate of 0.040 m3/s in a...Ch. 5 - The water level in a tank is 20 m above the...Ch. 5 - A hydraulic turbine has 50 m of head available at...Ch. 5 - In a hydroelectric power plant, water flows from...Ch. 5 - Reconsider Prob. 5-78E. Determine the flow rate of...Ch. 5 - A fan is to be selected to ventilate a bathroom...Ch. 5 - Water flows at a rate of 20 L/s through a...Ch. 5 - The water level in a tank is 34 ft above the...Ch. 5 - A large tank is initially filled with water 4 m...Ch. 5 - Water enters a hydraulic turbine through a...Ch. 5 - A 78-percent efficient 12-hp pump is pumping water...Ch. 5 - Water is pumped from a lower reservoir to a higher...Ch. 5 - Water in a partially filled large tank is to be...Ch. 5 - Underground water is to be pumped by a 78 percent...Ch. 5 - Reconsider Prob. 5-88. Determine the flow rate of...Ch. 5 - The velocity profile for turbulent flow in a...Ch. 5 - The demand for electric power is usually much...Ch. 5 - Prob. 92PCh. 5 - Consider a fully filled hemisphere shaped tank...Ch. 5 - The velocity of a liquid flowing in a circular...Ch. 5 - Air at 250 kgrn3 enters a nozzle that has an...Ch. 5 - The air in a 5m5-m3-m hospital room is to be...Ch. 5 - The water level in a tank is 70 ft above the...Ch. 5 - A pressurized 2-rn-diameter tank of water has a...Ch. 5 - Underground water is being pumped into a pool...Ch. 5 - Prob. 100PCh. 5 - A very large tank contains air at 102 kPa at a...Ch. 5 - Water is flowing through a Venturi meter whose...Ch. 5 - Water flows at a rate of 0.011 m3/s in a...Ch. 5 - Air flows through a pipe at a rate of 120 L/s. The...Ch. 5 - A 3-rn-high large tank is initially filled with...Ch. 5 - Reconsider Prob. 5-105. In order to dram the tank...Ch. 5 - A D0= 1 2-rn-diameter tank is initially filled...Ch. 5 - An oil pump is drawing 18 kW of electric power...Ch. 5 - A wind tunnel draws atmospheric air at 20°C and...Ch. 5 - Consider a spherical tank containing compressed...Ch. 5 - A tank with openings 1,2, and 3 is moving to left...Ch. 5 - Two dimensionally identical containers are...Ch. 5 - A circular thin plate is placed on the top of a...Ch. 5 - A pump-storage plant uses a turbine to generate...Ch. 5 - A diffuser in a pipe flow is basically a slow...Ch. 5 - Prob. 117PCh. 5 - Prob. 118PCh. 5 - Prob. 119PCh. 5 - Air enters a steady-flow compressor at 1 atm and...Ch. 5 - A 7$-m-high water body that is open to the...Ch. 5 - Prob. 122PCh. 5 - Prob. 123PCh. 5 - A hydraulic turbine is used to generate power by...Ch. 5 - The efficiency of a hydraulic turbine-generator...Ch. 5 - Which one is not an assumption involved with the...Ch. 5 - Consider incompressible, frictionless flow of a...Ch. 5 - Consider incompressible, frictionless flow of...Ch. 5 - Consider water flow in a piping network. The...Ch. 5 - The static and stagnation pressures of a fluid in...Ch. 5 - The static and stagnation pressures of a fluid in...Ch. 5 - The difference between the heights of energy grade...Ch. 5 - Water at 120 kPa (gage) is flowing in a horizontal...Ch. 5 - Water is withdrawn a the bottom of a large tank...Ch. 5 - Water at 80 kPa (gage) enters a horizontal pipe at...Ch. 5 - Liquid ethanol (p = 783 kg/m3) at a pressure of...Ch. 5 - Seawater is to be pumped into a large tank at a...Ch. 5 - An adiabatic pump is used to increase the pressure...Ch. 5 - The shaft power from a 90 percent-efficient...Ch. 5 - Using a 1are bucket whose volume is known and...Ch. 5 - Your company is setting up an experiment that...Ch. 5 - Computer-aided designs, the use of better...Ch. 5 - Using a handheld bicycle pump to generate an air...Ch. 5 - Using a flexible drinking straw and a ruler,...Ch. 5 - The power generated by a wind turbine is...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- 95kPa AIR hc he n A hA An Air tank is connect to a U-tube that contains three separate liquids as follows: (A) mercury, (B) kerosene (C) brine ha = 50 cm hB = 40 cm hc= 30 cm If the atmospheric pressure is 95 kPa, find the pressure in the Air tank.arrow_forwardA fireman is using high pressure stream of water from hose to combat ragingforest fire. At one end the hose has inside diameter of d1= 5cm ad is connectedto high pressure water reservoir at P1=300psi. At the other end is nozzle withdiameter d2=3cm that is exposed to atmospheric pressure P2=1atm.To a good approximation, flowing water in this process can be modelled ashaving a constant temperature and constant mass density =1g/cc. Moreover,for an incompressible liquid, the following equation well describes isothermalenthalpy changes.delta h= v. delta PWhere v is volume per mole or molecule (depending on the basis of h)1) How much faster is the velocity of exiting water at the nozzle than that ofthe entering stream at the reservoir? Express your answer as ratio.2) If hose is well insulated, find the exit velocity of stream of water, in m/s3) Find the exit volumetric flowrate of water, in gal/sarrow_forwardDrinking water from a large bottle placed on high ground references Inside the Damacana with an on / off valve at the end a plastic hose is immersed. On/off valve of hose with diameter 3 mm the found tip is 80 cm below the ground. Water in Damascus (P = 1000 kg/m3) fill a cup with a volume of 0.2 L for the state that the level is 60 cm calculate the time required. Casualties are negligible. 60 CT 80 m Please choose one:arrow_forward
- Blood flow from the left ventricle into the aorta can be modcled as a reducing nozzle. Model both the left ventricle and the aorta as a horizontal tube with diameter of 3.1 and 27 cm, respectively. The pressure in the left ventricle is 130 mmHg and the pressure in the norta is 123 mmHg. Calculate the flow rate of the blood. (Poiood = 1060 kgm-) %3Darrow_forwardShow the complete solution for this problemarrow_forwardIn some high-rise buildings, water is stored in an elevatedtank on the roof to minimize pressure fluctuations inthe system. Consider water that is pumped through a 10-cmsteel pipe to the roof of a 200-m-tall building; the pump ison the ground floor. For a water temperature of lOOC and aflow of 0.02 m3/s, what is the pressure at the pump discharge(in kPa)?arrow_forward
- A square bottomed tank measures 25*25*160cm and is positioned with the bottom of the tank 1m above sea level and at 20degreesC. The tank is 90% filled with water and 10% air. A water inlet enters the centre of the tank of 10mm diameter, and no other inlet or outlet is open within the tank. A pump drives water at a starting rate of 450ml/min at 0 Pa lowering to 350ml/min as the pressure increases to 800 kPa. The pump and tank are connected by a 10mm diameter pipe with k=0.15 for all fittings and tubing. It should be assumed this is the maximum flow and pressure provided by the pump. The pump will stop instantaneously once the pressure reaches 800kPa. The relationship between flow and pressure from the pump should be assumed linear. What will be the volume of compressed air inside the tank and how long will it take to fill?arrow_forwardA centrifugal pump is required to handle 50 lit/sec of gasoline against a net pressure of 4 kg/cm², Determine the head in m of liquid and the HP required by the pump, if its overall efficiency is 62%. Take the specific gravity of gasoline as 0.7. (57 and 43) A centrifugal pump draws water from a sump through a vertical 15 cm pipe. The pump has a horizontal discharge pipe 10 cm diameter which is 3.5 m above water level in the sump. While pumping 35 lit/sec, gauges near the pump at entrance and discharge read kg/cm respectively. The discharge gauge is 0.5 m above the suction gauge. Determine the horsepower output of the pump. 0.35 kg/cm and+1.8 (10.82) - To p. edict the performance of a loge centrifugal pump, its model, having р. the following specification, was made: P=24 IIP H=8 m N=925 rpm Diameter of model pump impeller is 9 times smaller than that of the prototype. The prototype pump has to work against a head of 30 m. Find its working speed and HP required to drive it. Determine…arrow_forwardBOOK: FLUID POWER, 3e, JAMES A. SULLIVAN PROBLEM: 2 - 11arrow_forward
- (1) Given the working form of the Bernoulli equation as dW - F dm Where 3 is the friction heating per unit mass dP F = Au - dm Given also that friction heating in laminar flow of Newtonian fluids in circular pipes is given as -AP F =- = -gAz = Q Ax " 128 Ax is change in the x-direction. A typical capillary viscometer has a large-diameter reservoir and a long, small diameter, vertical tube. The sample is placed in the reservoir and the flow rate due to gravity is measured. The tube is 0.1 m long and has a 1 mm ID. The height of the fluid in the reservoir above the inlet to the tube is 0.02 m. The fluid being tested has a density of 1050 kg / m. The flow rate is 10* m³ / s. What is the viscosity of the fluid? Typical capillary viscometerarrow_forwardIn the benzene plant, the pressure drop at some point of a pipeline in which benzene is passing through is measured with a U-tube manometer (Rm,1) as 10 cm (1stsituation). The manometer fluid is carbon tetrachloride(CCl4). Then, in order to avoid CCl4 poisoning, it is decided to add a layer of water to both arms of manometer (2nd situation). So, 4 cm of water is added to the left arm and 8 cm of water is added to right arm. In this newsituation, what will be the height difference of manometer fluid (CCl4) between the arms of the manometer (Rm,2)?Data: ρbenzene=876 kg/m3, ρwater=997 kg/m3, ρCCl4=1587 kg/m3arrow_forwardYour second customer wants to determine the required electrical power, which will be used to pump waterwith the following design specifications: The pump loses 3 kW in the form of heat to its surrounding. The inlet and the exit conditions of the water are as indicated in Figure 2. The pipe diameter is 5 cm.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University Press
Mechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSON
Thermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEY
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Engineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Fluid Mechanics - Viscosity and Shear Strain Rate in 9 Minutes!; Author: Less Boring Lectures;https://www.youtube.com/watch?v=_0aaRDAdPTY;License: Standard youtube license