Consider a refrigeration truck traveling at 70 mi/h at a location where the air is at 1 atm and 80°F. The refrigerated compartment of the truck can be considered to be a 9-ft-wide, 8-ft-high, and 20-ft-long rectangular box. Assuming the airflow over the entire outer surface to be turbulent and attached (no flow separation), determine the drag force acting on the top and side surfaces and the power required to overcome this drag.

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Q: 8 Air at standard conditions of 1 atm and 27°C flows over a flat plate at 20 m/s. The plate is 60 cm…

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Q: Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-…

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Q: A cylindrical bottle with a diameter of 10 cm and a height of 30 cm contains cold water at 3 °C. The…

A: Given data: d=10 cmh=30 cmTc=3°CT∞=27°CTf=11°C Need to determine the average wind speed.

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Q: Determine the drag force exerted on the flat plate of 4 m long when air is flowing over it with a…

A: The answer is given below

Q: In flow over bluff bodies such as a cylinder, how does the pressure drag differ from the friction…

A: The pressure drag is generated due to the shape of the object and it depends on the flow of…

Q: What are the three layers within turbulent flow? In which layer is the velocity smallest and in…

A: The three layers within the turbulent flow are: 1. Wall layer - This is the layer near the boundary…

Q: 5. The local atmospheric pressure in Denver, Colorado (elevation 1610 m) is 83.4 kPa. Air at this…

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Q: Air at 250C and 1.0 bar is flowing over a flat plate with a velocity of 8 m/s. Determine: (i) The…

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Q: Water at a velocity of 1.0 m/s flows along the length of one side of a flat plate that is 2 meters…

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Q: Q5/Air is to be heated by passing it over a bank of 3-m-long tubes inside which steam is condensing…

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A: The frontal area of the car, A = 18 ft2.Drag coefficient when the sunroof is closed, CD1 = 0.32.Drag…

Q: What effect does increasing the Reynolds number have on coefficient of lift and drag?

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A: Answer : The lift force depends upon Density of fluid Upstream Velocity Size, shape and orientation…

Q: The shooter holds a leather-covered baseball for a certain period of time, bringing the outer…

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Q: A person extends his uncovered arms into the windy air outside at 1 atm and 60°F and 25 mi/h in…

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A: Write the given data with suitable variables. v=5 m/sT∞=20 °CP=1 atmT=90 °Cd=60 cm=0.6 m100 cm1 mb=1…

Q: What is flow separation? What causes it? What is the effect of flow separation on the drag…

A: Flow separation It is a process in which the boundary layer of the fluid detaches itself from the…

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Q: Air with a pressure of 1 atm and a temperature of 285 K flows in a duct rectangular shape with a…

A: Given, Pressure, P=1atmTemperature, T=285KMass flow rate, m=0.1kg/sDuct size=75mm×150mmLength of…

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A: Given data: Length of plate, L = 22 ft Stream velocity, V = 6 ft/s Temperature, T = 75°F

Q: Define the planform area of a body subjected to external flow. When is it appropriate to use the…

A: Planform area: Plan area of an object is taken as the planform area. The plan is the view of the…

Q: Example 5 The total mass, wing area, cruising speed, and air resistance power of a small aircraft…

A: Givenm=1800kgA=42m2V=280 km/hr =280×1033600=77.78m/sPa=190kWH=4000m