FLUID MECHANICS FUND. (LL)-W/ACCESS4th EditionCENGEL Publisher: MCG CUSTOMISBN: 9781266016042
FLUID MECHANICS FUND. (LL)-W/ACCESS
Solutions for FLUID MECHANICS FUND. (LL)-W/ACCESS
Problem 3CP:
Which bicyclist is more likely to go faster: one who keeps his head and his body in the most upright...Problem 5CP:
Define the frontal area of a body subjected to external flow. When is it appropriate to use the...Problem 6CP:
Define the planform area of a body subjected to external flow. When is it appropriate to use the...Problem 8CP:
What is the difference between streamlined and bluff bodies? Is a tennis ball a streamlined or bluff...Problem 10CP:
During flow over a given body, the drag force, the upstream velocity. and the fluid density are...Problem 11CP:
During flow over a given slender body such as a wing, the lift force, the upstream velocity, and the...Problem 12CP:
What is terminal velocity? How is it determined?Problem 13CP:
What is the difference between skin friction drag and pressure drag? Which is usually more...Problem 14CP:
What is the effect of surface roughness on the friction drag coefficient in laminar and turbulent...Problem 16CP:
What is flow separation? What causes it? What is the effect of flow separation on the drag...Problem 18CP:
Consider laminar flow over a flat plate. How does the local friction coefficient change with...Problem 19CP:
In general, how does the drag coefficient vary with the Reynolds number at (a) low and moderate...Problem 20CP:
Fairings are attached to the front and back of a cylindrical body to make it took more streamlined....Problem 22P:
The resultant of the pressure and wall shear forces acting on a body is measured to be 430 N, making...Problem 25EP:
To reduce the drag coefficient and thus to improve the fuel efficiency, the frontal area of a car is...Problem 27P:
A circular sign has a diameter of 50 cm and is subjected to normal winds up to 150 km/h at 10°C and...Problem 30EP:
At highway speeds, about half of the power generated by the car’s engine is used to overcome...Problem 31P:
A submarine can be treated as an ellipsoid with a diameter of 5 m and a length of 25 m. Determine...Problem 32P:
A 70-kg bicyclist is riding her 1 5-kg bicycle downhill on a road with a slope of 8 without pedaling...Problem 33P:
A wind turbine with two or four hollow hemispherical cups connected to a pivot is commonly used to...Problem 35P:
During steady motion of a vehicle on a level road, the power delivered to the wheels is used to...Problem 38P:
A 0.80-m-diameter, 1 .2-rn-high garbage can is found in the morning tipped over due to high winds...Problem 39P:
An 8-mm-diameter plastic sphere whose density is 1150 kg/m3 is dropped into water at 20°C. Determine...Problem 41EP:
The drag coefficient of a vehicle increases when its windows are rolled down or its sunroof is...Problem 42P:
To reduce the drag coefficient and thus to improve the fuel efficiency of cars, the design of side...Problem 43P:
During major windstorms, high vehicles such as RVs and semis may be thrown off the road and boxcars...Problem 44CP:
What does the friction coefficient represent in flow over a flat plate? How is it related to the...Problem 45CP:
What fluid property is responsible for the development of the velocity boundary layer? That is the...Problem 48P:
The local atmospheric pressure in Denver, Colorado (elevation 1610 m) is 83.4 kPa. Air at this...Problem 53P:
Air at 25C and 1 atm is flowing over a long flat plate with a velocity of 8 m/s. Determine the...Problem 55P:
During a winter day, wind at 70 km/h, 5C , and I atm is blowing parallel to a 4-m-high and 15-rn-...Problem 57P:
The forming section of a plastics plant puts out a continuous sheet of plastic that is 1.2 in wide...Problem 59CP:
Why is flow separation in flow over cylinders delayed when the boundary layer is turbulent?Problem 61P:
A 5-mm-diameter electrical transmission line is exposed to windy air. Determine the drag force...Problem 62P:
A 1ong 5-cm-diameter steam pipe passes through some area open to the wind. Determine the drag force...Problem 63P:
Consider 0.8-cm-diameter hail that is falling freely in atmospheric air at I atm and 5C . Determine...Problem 68P:
One of the popular demonstrations in science museums involves the suspension of a ping-pong ball by...Problem 70CP:
What is stall? What causes an airfoil to stall? Why are commercial aircraft not allowed to fly at...Problem 72CP:
Air is flowing past a symmetrical airfoil at zero angle of attack. Is the (a) lift and (b) drag...Problem 73CP:
Both the lift and the drag of an airfoil increase with an increase in the angle of attack. In...Problem 76CP:
Air is flowing past a symmetrical airfoil at an angle of attack of 5’. Is the (a) lift and (b) drag...Problem 81CP:
How do flaps affect the lift and the drag of wings?Problem 83P:
Consider an aircraft that takes off at 260 km/h when it is fully loaded. If the weight of the...Problem 87P:
A tennis ball with a mass of 57 and a diameter of 6.4 cm is hit ith an initial velocity of 105 km/h...Problem 88P:
A small aircraft has a wing area of 40 m2, a lift coefficient of 0.4$ at takeoff settings, and a...Problem 90P:
Consider a light plane that has a total weight of 11.000 N and a wing area of 39 rn2 and whose wings...Problem 91P:
A small airplane has a total mass of 1800 kg and a wing area of 42 m2. Determine the lift and drag...Problem 92P:
An airplane has a mass of 48.000 k. a wins area of 300 m2, a maximum lift coefficient of 3.2, and a...Problem 96P:
A 2-zn-high, 4-zn-wide rectangular advertisement panel is attached to a 4-rn-wide. 0.15-rn-high...Problem 97P:
11-97 A plastic boat whose bottom surface can be approximated as a 1.5-rn-wide. 2-rn-long flat...Problem 101EP:
A commercial airplane has a total mass of 150.000 Ibm and a wing planform area of 1700 ft2. The...Problem 120P:
The region of flow trailing the body where the effects of the body are felt is called (a) Wake (b)...Problem 127P:
An airplane has a total mass of 3.000kg and a wing planform area of 65 m2. The airplane is cruising...Problem 129P:
Write a report on the history of the reduction of the drag coefficients of cars and obtain the drag...Problem 130P:
Write a report oil the flips used at the leading and trailing edges of the wings of large commercial...Problem 131P:
Discuss how to calculate drag force a unsteady flow.Problem 132P:
Large commercial airplanes cruise at high altitudes (up to about 40.000 ft) to save fuel. Discuss...Browse All Chapters of This Textbook
Chapter 1 - Introduction And Basic ConceptsChapter 2 - Properties Of FluidsChapter 3 - Pressure And Fluid StaticsChapter 4 - Fluid KinematicsChapter 5 - Bernoulli And Energy EquationsChapter 6 - Momentum Analysis Of Flow SystemsChapter 7 - Dimensional Analysis And ModelingChapter 8 - Internal FlowChapter 9 - Differential Analysis Of Fluid FlowChapter 10 - Approximate Solutions Of The Navier–stokes Equation
Sample Solutions for this Textbook
We offer sample solutions for FLUID MECHANICS FUND. (LL)-W/ACCESS homework problems. See examples below:
Chapter 1, Problem 1CPChapter 1, Problem 23PChapter 1, Problem 31PChapter 1, Problem 55PChapter 1, Problem 71PChapter 2, Problem 1CPChapter 2, Problem 19PChapter 2, Problem 39PChapter 2, Problem 49P
Given information: The pressure of the air is 95 kPa, the initial temperature is 20°C, the final...Chapter 2, Problem 77PChapter 2, Problem 85PChapter 2, Problem 87PGiven information: The diameter of glass tube is 0.018 in, the contact angle with the glass is 140°,...Chapter 2, Problem 118PChapter 2, Problem 123PChapter 2, Problem 127PChapter 2, Problem 128PGiven: The shear stress used for the Herschel-Bulkley constitute model is τ=τν+K( du dy)m, Yield...Chapter 2, Problem 132PChapter 3, Problem 1CPChapter 3, Problem 26PChapter 3, Problem 48PChapter 3, Problem 49PChapter 3, Problem 51PChapter 3, Problem 55PChapter 3, Problem 67PChapter 3, Problem 72PChapter 3, Problem 78PChapter 3, Problem 79EPChapter 3, Problem 80PChapter 3, Problem 81PChapter 3, Problem 85PChapter 3, Problem 86PChapter 3, Problem 87PChapter 3, Problem 90PChapter 3, Problem 135PThe radius of the semi-circular gate is 0.5 m, specific gravity of fluid in section 1 is 0.91,...Chapter 3, Problem 146PChapter 4, Problem 1CPChapter 4, Problem 23PGiven information: The flow is symmetric about x axis. Write the expression for the two-dimensional...Given information: The fluid particle is located on the centre line. Write the expression for the...Chapter 4, Problem 58PChapter 4, Problem 66PThe shear strain rate is half of the rate of decrease of the angle between two perpendicular lines...The vector field of flow is V⇀=k(x2−y2)i⇀−2kxyj⇀ and the radius of curvature of streamline is R=[1+...Chapter 4, Problem 98PChapter 4, Problem 101PWrite the expression for the two dimensional Poiseuille flow. u=12μdPdx(y2−hy). Here, the distance...Given information: The velocity component along the x direction is...Chapter 4, Problem 120PChapter 4, Problem 121PChapter 5, Problem 1CPChapter 5, Problem 53PChapter 5, Problem 55PChapter 5, Problem 57EPChapter 5, Problem 62PChapter 5, Problem 80PChapter 5, Problem 84PChapter 5, Problem 88PChapter 5, Problem 89PChapter 5, Problem 98PChapter 5, Problem 109PChapter 5, Problem 114PChapter 5, Problem 115PChapter 5, Problem 116PChapter 5, Problem 136PChapter 6, Problem 1CPChapter 6, Problem 23PGiven information: The volume flow rate of the water is 35 L/s, the discharge area for the smaller...Chapter 6, Problem 57PChapter 6, Problem 67PChapter 6, Problem 69PChapter 6, Problem 70PChapter 6, Problem 77PChapter 6, Problem 78PChapter 6, Problem 89PGiven information: The length of the slit is 1.2 m, width of the rectangular slit is 5 mm, water...Chapter 6, Problem 96PChapter 7, Problem 1CPGiven information: The shaft power is W˙, the angular velocity is ω, the fluid density is ρ, the...Chapter 7, Problem 53PChapter 7, Problem 62PChapter 7, Problem 67PThe angular velocity is ω, the fluid density is ρ, the acceleration due to gravity id g, the radius...Chapter 7, Problem 74PGiven information: force pressure gradient =dPdxFlow : steady+ incomprssible down stream distance...In M-L-T system, force = mass×accelerationF = m × a{F} = {mass × meter sec 2}{F} = {M × L t 2}{F} =...Given Information: Top plate speed, Vtop Bottom plate speed, Vbottom Steady flow, incompressible, 2...Chapter 7, Problem 112PChapter 7, Problem 113PChapter 7, Problem 118PGiven information: The following figure shows that two parallel flat plates. Figure-( 1) Assume, at...Chapter 8, Problem 1CPChapter 8, Problem 61PChapter 8, Problem 73PGiven information: The temperature of the water is 70 °F, density of the water is 62.3 lbm/ft3,...Given information: The air discharge rate is 1.2 ft3/s, diameter of the vent is 5 in, length of the...Given information: The temperature of oil is 20°C, the height of cylindrical reservoir is 20 cm, the...Given information: The temperature of the water is 110°C, density of the water is 950.6 kg/m3,...Chapter 8, Problem 94PChapter 8, Problem 96PGiven Information: The diameter of the pipe is 6 cm, the length of the pipe is 33 m, the inlet...Chapter 8, Problem 136PChapter 8, Problem 137PGiven information: The diameter of the cast iron pipe is 0.35 m and the length of the cast iron pipe...Given information: The diameter of tank 1 is 30 cm, diameter of tank 2 is 12 cm, diameter of orifice...Chapter 8, Problem 153PGiven information: The swimming pool diameter is 10 m, the swimming pool height is 2 m, the...Chapter 8, Problem 159PThe following figure represents the branched pipes. Figure-(1) Write the expression for the area of...Chapter 9, Problem 1CPChapter 9, Problem 16PGiven information: The incompressible flow filed for which the velocity u component is u=ax2−bxy,...Given information: The velocity component in θ direction is equal to 0. Write the expression for...Given information: The diameter at the entrance of the nozzle is 0.50 in, the diameter at exit of...Chapter 9, Problem 87PChapter 9, Problem 93PGiven information: The flow is steady, laminar, two-dimensional and incompressible. The flow is...Chapter 9, Problem 101PChapter 9, Problem 102PChapter 9, Problem 103PGiven information: The assumptions made are stated below: The flow is parallel, steady, and laminar....Chapter 9, Problem 123PChapter 10, Problem 1CPGiven information: Actual stokes law is FD=3πμDV+(9π/16)ρV2D2. Three aluminum balls of diameters 2...First, we need to use continuity equation for velocity component. From continuity equation, We have,...Chapter 10, Problem 29PGiven: h0=sleeper pad=11000h1=final height of sleeper=12000 lenght=1.0 Concept Used: Convergence of...Chapter 10, Problem 62PChapter 10, Problem 69PChapter 10, Problem 90PChapter 10, Problem 91PChapter 10, Problem 97PChapter 10, Problem 108PChapter 10, Problem 110PChapter 10, Problem 113PGiven information: The density of air is 0.8588 kg/m3, the temperature of air is −50°C the pressure...Chapter 11, Problem 1CPChapter 11, Problem 41EPChapter 11, Problem 43PChapter 11, Problem 48PChapter 11, Problem 68PChapter 11, Problem 88PChapter 11, Problem 96PChapter 11, Problem 101EPGiven information: Length=3 m Diameter=0.5 m Atmospheric pressure=87 kPa Temperature=20∘C=295 K...Given information: Mass of tractor=17,000 kg Frontal area=9.2 m2 Rolling resistance coefficient=0.05...Given information: Diameter=2 mm ρs=2600 kgm3ρf=1274 kgm3 Vexperimental=3.2 mms μ=1 kgm⋅s Concept...Given information: The diameter of the first aluminum ball is 2 mm, the diameter of the second...Given information: The diameter of the ball is 2 mm, the density of the ball is 2700 kg/m3, the...Chapter 12, Problem 1CPGiven: Air pressure, air temperature and Mach number are 14 psia, 40°F and 2 respectively. Flow...Given: The upstream the shock is given by, Pressure of air P1=58kPa Temperature of air T1=270K Mach...Given: The properties of air are: k = 1.4R = 0.287 kJ/kg·K,cp = 1.005 kJ/kg·K The properties of...Chapter 12, Problem 102PGiven: Temperature T1 = 480R Velocity V1=100 m/s Pressure P1=8 psia Mach number Ma1=2.0 Force...Chapter 12, Problem 126EPGiven: Ambient temperature at inlet T1= 500 K Stagnation Pressure P01=P1=220 psia Exit pressure P2 =...Given: The properties of air: R =0.280 kJ/kg.K cp=1.005 kJ/kg.K k=1.33 Inlet Temperature T1=510K...Given: Mach number k=1.2,1.4 and 1.6 range of 0≤Ma≤1. Calculation: Equation is given by m. R T 0...Chapter 13, Problem 1CPGiven Information: The water flow rate is 10 m3/s and the bottom slope is 0.0015 Write the...Given Information: The figure below represents the cross -section of three channels. Figure-(1) The...Given Information: The figure below shows the cross -section of the channel. Figure-(1) The bottom...Chapter 13, Problem 61PChapter 13, Problem 85PGiven information: Velocity of water flow is 10 m/s, the flow depth is 0.65 m, the bump height is 30...Given Information: The flow depth of upstream weir is 5 ft and the height of the gate opening is 1.1...Given information: The flow depth before the jump is 0.7 m, the flow depth after the jump is 5 m,...Given information: The channel angle is 0.5°. Write the expression for flow rate using manning's...Chapter 13, Problem 140PGiven information: Water is flowing through a sluice gate, the velocity of water before reaching the...Chapter 13, Problem 143PChapter 13, Problem 144PGiven information: The height of bump is 20 cm, initial velocity of flow is 1.25 m/s, the flow depth...Chapter 13, Problem 167PChapter 14, Problem 1CPChapter 14, Problem 35EPChapter 14, Problem 36EPChapter 14, Problem 41PChapter 14, Problem 47EPChapter 14, Problem 55EPChapter 14, Problem 56EPChapter 14, Problem 57EPChapter 14, Problem 61PChapter 14, Problem 62PGiven information: The number of rotations of centrifugal pump is 750 rpm. The inlet radius is 12 cm...Given information: The number of rotations of centrifugal pump is 750 rpm. The inlet radius is 12 cm...Given information: The diameter of the turbine A is 1.50 mand the number of rotation for the turbine...Chapter 14, Problem 123PChapter 15, Problem 1CP
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