Fox and McDonald's Introduction to Fluid Mechanics
9th Edition
ISBN: 9781118912652
Author: Philip J. Pritchard, John W. Mitchell
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 6, Problem 63P
Describe the pressure distribution on the exterior of a multistory building in a steady wind. Identify the locations of the maximum and minimum pressures on the outside of the building. Discuss the effect of these pressures on infiltration of outside air into the building.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A semi-cylindrical concrete structure having a radius of 5 m and length of 3 m is rested on ground. Wind (air having a density ρ=1,2 kg/m3 ) at a free-sream speed of 3 m/s with an atmospheric pressure of 100 kPa far upstream the structure blows over the structure. The air entrance to the structure is at ground level corresponding to the forward stagnation point and the magnitude of minimum pressure is acting on the top of the structure a lift force is generated. Estimate the lift coefficient C L =? with calculated magnitude of lift force from potential flow theory
ANSWER: 4
A semi-cylindrical concrete structure having a radius of 3 m and length of 5 m is rested on ground. Wind (air having a density ρ=1,2 kg/m3 ) at a free-sream speed of 10 m/s with an atmospheric pressure of 100 kPa far upstream the structure blows over the structure. The air entrance to the structure is at ground level corresponding to the forward stagnation point and the magnitude of minimum pressure is acting on the top of the structure a lift force is generated. Estimate the lift coefficient C L =? with calculated magnitude of lift force from potential flow theory
A semi-cylindrical concrete structure having a radius of 5 m and length of 3 m is rested on ground. Wind (air having a density ρ=1,2 kg/m3 ) at a free-sream speed of 3 m/s with an atmospheric pressure of 100 kPa far upstream the structure blows over the structure. The air entrance to the structure is at ground level corresponding to the forward stagnation point . Determine the magnitude of pressure at ground level in terms of gage .Assume flow potential.
a. 100 kPa
b. 5,4 Pa
c. 105,4 Pa
d. 5,4 kPa
e. 94,6 kPa
Chapter 6 Solutions
Fox and McDonald's Introduction to Fluid Mechanics
Ch. 6 - An incompressible frictionless flow field is given...Ch. 6 - A velocity field in a fluid with density of 1000...Ch. 6 - The x component of velocity in an incompressible...Ch. 6 - Consider the flow field with the velocity given by...Ch. 6 - Consider the flow field with the velocity given by...Ch. 6 - The velocity field for a plane source located...Ch. 6 - In a two-dimensional frictionless, incompressible...Ch. 6 - Consider a two-dimensional incompressible flow...Ch. 6 - An incompressible liquid with a density of 900...Ch. 6 - Consider a flow of water in pipe. What is the...
Ch. 6 - The velocity field for a plane vortex sink is...Ch. 6 - An incompressible liquid with negligible viscosity...Ch. 6 - Consider water flowing in a circular section of a...Ch. 6 - Consider a tornado as air moving in a circular...Ch. 6 - A nozzle for an incompressible, inviscid fluid of...Ch. 6 - A diffuser for an incompressible, inviscid fluid...Ch. 6 - A liquid layer separates two plane surfaces as...Ch. 6 - Consider Problem 6.15 with the nozzle directed...Ch. 6 - Consider Problem 6.16 with the diffuser directed...Ch. 6 - A rectangular computer chip floats on a thin layer...Ch. 6 - Heavy weights can be moved with relative ease on...Ch. 6 - The y component of velocity in a two-dimensional...Ch. 6 - The velocity field for a plane doublet is given in...Ch. 6 - Tomodel the velocity distribution in the curved...Ch. 6 - Repeat Example 6.1, but with the somewhat more...Ch. 6 - Using the analyses of Example 6.1 and Problem...Ch. 6 - Water flows at a speed of 25 ft/s. Calculate the...Ch. 6 - Plot the speed of air versus the dynamic pressure...Ch. 6 - Water flows in a pipeline. At a point in the line...Ch. 6 - In a pipe 0.3 m in diameter, 0.3 m3/s of water are...Ch. 6 - A jet of air from a nozzle is blown at right...Ch. 6 - The inlet contraction and test section of a...Ch. 6 - Maintenance work on high-pressure hydraulic...Ch. 6 - An open-circuit wind tunnel draws in air from the...Ch. 6 - Water is flowing. Calculate H(m) and p(kPa). P6.36Ch. 6 - If each gauge shows the same reading for a flow...Ch. 6 - Derive a relation between A1 and A2 so that for a...Ch. 6 - Water flows steadily up the vertical 1...Ch. 6 - Your car runs out of gas unexpectedly and you...Ch. 6 - A tank at a pressure of 50 kPa gage gets a pinhole...Ch. 6 - The water flow rate through the siphon is 5 L/s,...Ch. 6 - Water flows from a very large tank through a 5 cm...Ch. 6 - Consider frictionless, incompressible flow of air...Ch. 6 - A closed tank contains water with air above it....Ch. 6 - Water jets upward through a 3-in.-diameter nozzle...Ch. 6 - Calculate the rate of flow through this pipeline...Ch. 6 - A mercury barometer is carried in a car on a day...Ch. 6 - A racing car travels at 235 mph along a...Ch. 6 - The velocity field for a plane source at a...Ch. 6 - A smoothly contoured nozzle, with outlet diameter...Ch. 6 - Water flows steadily through a 3.25-in.-diameter...Ch. 6 - A flow nozzle is a device for measuring the flow...Ch. 6 - The head of water on a 50 mm diameter smooth...Ch. 6 - Water flows from one reservoir in a 200-mm pipe,...Ch. 6 - Barometric pressure is 14.0 psia. What is the...Ch. 6 - A spray system is shown in the diagram. Water is...Ch. 6 - Water flows out of a kitchen faucet of...Ch. 6 - A horizontal axisymmetric jet of air with...Ch. 6 - The water level in a large tank is maintained at...Ch. 6 - Many recreation facilities use inflatable bubble...Ch. 6 - Water flows at low speed through a circular tube...Ch. 6 - Describe the pressure distribution on the exterior...Ch. 6 - An aspirator provides suction by using a stream of...Ch. 6 - Carefully sketch the energy grade lines (EGL) and...Ch. 6 - Carefully sketch the energy grade lines (EGL) and...Ch. 6 - Water is being pumped from the lower reservoir...Ch. 6 - The turbine extracts power from the water flowing...Ch. 6 - Consider a two-dimensional fluid flow: u = ax + by...Ch. 6 - The velocity field for a two-dimensional flow is...Ch. 6 - A flow field is characterized by the stream...Ch. 6 - The flow field for a plane source at a distance h...Ch. 6 - The stream function of a flow field is = Ax2y ...Ch. 6 - A flow field is characterized by the stream...Ch. 6 - A flow field is characterized by the stream...Ch. 6 - The stream function of a flow field is = Ax3 ...Ch. 6 - A flow field is represented by the stream function...Ch. 6 - Consider the flow field represented by the...Ch. 6 - Show by expanding and collecting real and...Ch. 6 - Consider the flow field represented by the...Ch. 6 - An incompressible flow field is characterized by...Ch. 6 - Consider an air flow over a flat wall with an...Ch. 6 - A source with a strength of q = 3 m2/s and a sink...Ch. 6 - The velocity distribution in a two-dimensional,...Ch. 6 - Consider the flow past a circular cylinder, of...Ch. 6 - The flow in a corner with an angle can be...Ch. 6 - Consider the two-dimensional flow against a flat...Ch. 6 - A source and a sink with strengths of equal...Ch. 6 - A flow field is formed by combining a uniform flow...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
How many strokes per minute would be required to obtain a cutting speed of 36.6 m/min (120 ft/min) on a typical...
Degarmo's Materials And Processes In Manufacturing
The power needed to overcome wind and friction dragassociated with an automobile traveling at a constantvelocit...
Fundamentals of Heat and Mass Transfer
Three rigid bodies, 2,3, and 4, are connected by four springs as shown in the figure. A horizontal force of 1,0...
Introduction To Finite Element Analysis And Design
Neglect the mass of the motor and pulleys.
Engineering Mechanics: Dynamics (14th Edition)
What parts are included in the vehicle chassis?
Automotive Technology: Principles, Diagnosis, and Service (5th Edition)
What parts are included in the vehicle chassis?
Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
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
- For a 90%-efficient cyclone processing 9000 cfm of air with a pressure drop of 9.0 inches of water, calculate the fluid power in units of horsepower. Furthermore, estimate the size of the electric motor needed to run a fan to move the air through this cyclone.arrow_forward1. A quonset hut is a lightweight, metal building with a semicircular cross section. Consider a quonset hut that has a radius of 2 m and is 10 m long. In a hurricane when the atmospheric pressure is 90 kPa and the temperature is 30°C, the wind is blowing with a speed of 60 m/s directly crosswise to the quonset hut. Assume that conditions are the same for every cross section of the hut – that is, the flow is two-dimensional everywhere along the length of the hut. (a) Consider the case of the hut sitting directly on the ground. If there is a small hole in the hut, the pressure everywhere inside the hut will be equal to the pressure outside the hut at the point of the hole. Assume there is a hole just where the hut touches the ground. The building is made of steel and has a mass of 15,000 kg. Will the building lift off the ground in the storm? (Do not consider drag. Recall that p = pRT.) What assumptions do you need to use in order to make this determination. V Quonset hut for part a. (b)…arrow_forwardAir at standard pressure and temperature is compressed adiabatically to 3 am. What are (a) the density and (b) the temperature?arrow_forward
- 5. The local atmospheric pressure in Denver, Colorado (elevation 1610 m) is 83.4 kPa. Air at this pressure and at 25°C flows with a velocity of 9 m/s over a 2.5-m x 5-m flat plate. Determine the drag force acting on the top surface of the plate if the air flows parallel to the (a) 5-m-long side and (b) the 2.5-m-long side.arrow_forwardCalculate the air velocity at ports 1 and 2 if the water column pressure difference is 8.5 cm. Air and water have densities of 1.25 kg/m3 and 1000 kg/m3, respectively.arrow_forwardQuestion B3 – External Flow The rectangular wings of a microlight aircraft have a combined spanwise length of 9.144 m and streamwise (direction of air flow) width of 0.9144 m The wings have a coefficient of form drag of 0.01 and a lift coefficient of 0.3 in cruise. When cruising at a speed of 15Okm/h and altitude of 3,000 feet, the temperature and absolute pressure of the atmospheric air are 5°C and 90 kPa, respectively. a) Calculate the density of the air at cruising altitude. b) Calculate the form drag on the wings. c) Calculate the Reynolds number of the wings.arrow_forward
- 3. A semi-cylindrical concrete structure having a radius of 5 m and length of 3 m is rested on ground. Wind (air having a density p=1,2 kg/m3 ) at a free-sream speed of 3 m/s with an atmospheric pressure of 100 kPa far upstream the structure blows over the structure. The air entrance to the structure is at ground level corresponding to the forward stagnation point and the magnitude of minimum pressure is acting on the top of the structure a lift force is generated. Estimate the lift coefficient CL =? with calculated magnitude of lift force from potential flow theory Lütfen birini seçin: а. 2 b. 3 С. 1 d. 12 е. 4arrow_forwardAn air current moving vertically upward at 5 m/s carries raindrops of various sizes. Calculate the velocity of a 2-mm-diameter drop and determine whether it is rising or falling. Repeat this exercise for a 0.2-mm-diameter drop. Assume standard atmospheric pressure and air temperature 20 ̊C. Air density = 1.20 kg/m3 also determine the precipitation intensity if the surface temperature is 20˚C. By what percentage is the precipitation intensity reduced by lowering temperature from 30 to 20˚C. Calculate the rate of release of latent heat in the thunderstorm through condensation of water vapour.arrow_forwardA 0.5 m x 2 m flat plate is towed at 5 m/s on a 2-mm-thick layer of SAE-30 oil at 38°C that separates it from a flat surface. The velocity distribution between the plate and the surface is assumed to be lincar. What force is required if the plate and surface are horizontal? 1.4arrow_forward
- Question #8 A long 8cm diameter steam pipe whose external surface temperature is 90°C passes through some open area that is not protected against the winds. The air is at latm pressure and 7°C and the wind is blowing across the pipe at a velocity of 50km/h. (Take Re = 5x10³) (Note: use liner interpolation method where applicable) 5/87 4/5 0.62 Repr¹/3 Re 282,000 [1 + (0.4/10/2/2/1/8 [1 + (25/20 (0.4/Pr)2/3] (A) Draw the schematic diagram of this problem and label all quantities. (B) Compute required properties at the film temperature. (C) Determine the Reynolds number (i.e. Re). (D) Determine the Nusselt number (i.e. Nu) for this unit length pipe. (E) Determine the rate of heat transfer from this pipe. Nu = 0.3+ 00)arrow_forward8. A Boeing 747 plane weighs 404,600 lbf, has a wing area of 6360 ft, and has a wing length of 211 ft. The airplane is moving along the runway at 290 ft/s. The atmospheric pressure and temperature are 14.7 psia and 55°F, respectively. Find the lift and drag on the airplane wings for an angle of attack of 10°. Note: the aspect ratio of a wing is defined as the square of wing length divided by wing area.arrow_forwardThe shaft for a small high speed rotating machine has a diameter of 60mm. The absolute pressure within the machine is 1.2×10 Pa and the operating temperature is approximately 318 K. Design a suitable labyrinth seal to limit the flow of air escaping from the machine to atmospheric conditions to 0.01 kg/s. 12.4arrow_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 PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering 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