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The drag coefficient of a car at the design conditions of 1 atm, 25°C, and 90...
The drag coefficient of a car is to be determined experimentally with a full scaleWind tunnel...
The drag coefficient of a car is to be determined experimentally with a full scaleWind tunnel test in a large wind tunnel. The wind speed is60 mih 00 km/h (60 mi/h) and the drag force measured on a scale as shown in the adjacent drawing is 302 N (68 lbf). The frontal area of the car is 2.068 m2 (22.26 ft2) Neglect any ground effect due to the floor not moving relative to the car (a) Calculate the drag coefficient...
A one-third scale model of a car is to be tested in a wind tunnel. The...
A one-third scale model of a car is to be tested in a wind tunnel. The conditions of the actual car are v = 75 km/h and I = 0°C and the air temperature in the wind tunnel is 20°C. In order to achieve similarity between the model and the prototype, the wind tunnel velocity should be The properties of air at 1 atm and 0°C: mass density (p) = 1.292 kg/m3, kinematic viscosity (V) = 1.338x10-5 m2/5 The properties...
Problem 7-C: The aerodynamic drag of a new sports car is to be predicted at a...
Problem 7-C: The aerodynamic drag of a new sports car is to be predicted at a speed of 70.0 mi/h at an air temperature of 25°C. Automotive engineers build a one-fourth scale model of the car to test in a wind tunnel. The temperature of the wind tunnel air is also 25°C. The drag force is measured with a drag balance, and the moving belt is used to simulate the moving ground (from the car's frame of reference) Determine how...
The aerodynamic drag of a new sports car is to be predicted at a speed of 75 km/h at an air temperature of 25°C. Automot...
The aerodynamic drag of a new sports car is to be predicted at a speed of 75 km/h at an air temperature of 25°C. Automotive engineers build a one-fifth scale model of the car to test in a wind tunnel. It is winter and the wind tunnel is located in an unheated building. The temperature of the wind tunnel air is only 5°C. a) Determine how fast the engineers should run the wind tunnel in order to achieve similarity between...
A car travels at a constant velocity of 90 km/h along an expressway under-ambient temperature and...
A car travels at a constant velocity of 90 km/h along an
expressway under-ambient temperature and pressure conditions. The
width of the car is 1.5 m while its height is 1.2 m. The wheelbase
(length between the front and rear wheels) is 2.5 m. The drag
coefficient is 0.22.
[Use
air, ambient density of the air = 1.12 kg/m3 and,
fuel, density of the fuel = 930 kg/m3. You may neglect
any energy contained in the exhaust gases and any...
Chapter 2: Dimensional Analysis Exercise!l 2019 1. Amirul Asyraf's team is to design a human-powe...
how to do this?
Chapter 2: Dimensional Analysis Exercise!l 2019 1. Amirul Asyraf's team is to design a human-powered submarine for a design competition The overall length of the prototype submarine is 2.24 m, and its student designers hope that it can travel fully submerged through water at 0.560 m/s, The water is freshwater (a lake) at T-15°C. The design team builds a one-eighth scale model to test in ther university's wind tunnel. A shield surrounds the drag balance strut...
The aerodynamic characteristics of a new car are to be predicted through a wind tunnel testing....
The aerodynamic characteristics of a new car are to be predicted through a wind tunnel testing. Engineers build a one-fifth scale model of the car and placed it in the test section of the wind tunnel. The measured flow properties are given as Modet T+5°C, ?-1269kg/m 3 , ?-1.754 x 10-5 kg/m.s Prototype: T 25°C,p:1184 kg/m, ?#1.849 x 10-5 kg/mS, If the dimensional analysis results are outline as follows: V-50km/h Where, aerodynamic drag force, ? = density, V = speed,...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The wid...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w -0.5 m and their lengths are either lı- 2 m or l2-2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is p 1000 kg/m3 and its absolute viscosityH 1.00 x 10-3 N.s/m2. You are asked to perform dimensional analysis to find the drag force on the...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The widt...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w = 0.5 m and their lengths are either 11-2 m or l2 2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is p 1000 kg/m3 and its absolute viscosityu- 1.00 x 10-3 N.s/m2. You are asked to perform dimensional analysis to find the drag force on...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The widt...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w 0.5 m and their lengths are either l-2 m or 12 = 2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is ρ = 1000 kg/mand its absolute viscosity 1.00 x 10-3 N.s/m2 You are asked to perform dimensional analysis to find the drag force on...
The drag coefficient of a car is to be determined experimentally with a full scaleWind tunnel test in a large wind tunnel. The wind speed is60 mih 00 km/h (60 mi/h) and the drag force measured on a scale as shown in the adjacent drawing is 302 N (68 lbf). The frontal area of the car is 2.068 m2 (22.26 ft2) Neglect any ground effect due to the floor not moving relative to the car (a) Calculate the drag coefficient...
A one-third scale model of a car is to be tested in a wind tunnel. The conditions of the actual car are v = 75 km/h and I = 0°C and the air temperature in the wind tunnel is 20°C. In order to achieve similarity between the model and the prototype, the wind tunnel velocity should be The properties of air at 1 atm and 0°C: mass density (p) = 1.292 kg/m3, kinematic viscosity (V) = 1.338x10-5 m2/5 The properties...
Problem 7-C: The aerodynamic drag of a new sports car is to be predicted at a speed of 70.0 mi/h at an air temperature of 25°C. Automotive engineers build a one-fourth scale model of the car to test in a wind tunnel. The temperature of the wind tunnel air is also 25°C. The drag force is measured with a drag balance, and the moving belt is used to simulate the moving ground (from the car's frame of reference) Determine how...
A car travels at a constant velocity of 90 km/h along an
expressway under-ambient temperature and pressure conditions. The
width of the car is 1.5 m while its height is 1.2 m. The wheelbase
(length between the front and rear wheels) is 2.5 m. The drag
coefficient is 0.22.
[Use
air, ambient density of the air = 1.12 kg/m3 and,
fuel, density of the fuel = 930 kg/m3. You may neglect
any energy contained in the exhaust gases and any...
how to do this?
Chapter 2: Dimensional Analysis Exercise!l 2019 1. Amirul Asyraf's team is to design a human-powered submarine for a design competition The overall length of the prototype submarine is 2.24 m, and its student designers hope that it can travel fully submerged through water at 0.560 m/s, The water is freshwater (a lake) at T-15°C. The design team builds a one-eighth scale model to test in ther university's wind tunnel. A shield surrounds the drag balance strut...
The aerodynamic characteristics of a new car are to be predicted through a wind tunnel testing. Engineers build a one-fifth scale model of the car and placed it in the test section of the wind tunnel. The measured flow properties are given as Modet T+5°C, ?-1269kg/m 3 , ?-1.754 x 10-5 kg/m.s Prototype: T 25°C,p:1184 kg/m, ?#1.849 x 10-5 kg/mS, If the dimensional analysis results are outline as follows: V-50km/h Where, aerodynamic drag force, ? = density, V = speed,...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w -0.5 m and their lengths are either lı- 2 m or l2-2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is p 1000 kg/m3 and its absolute viscosityH 1.00 x 10-3 N.s/m2. You are asked to perform dimensional analysis to find the drag force on the...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w = 0.5 m and their lengths are either 11-2 m or l2 2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is p 1000 kg/m3 and its absolute viscosityu- 1.00 x 10-3 N.s/m2. You are asked to perform dimensional analysis to find the drag force on...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w 0.5 m and their lengths are either l-2 m or 12 = 2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is ρ = 1000 kg/mand its absolute viscosity 1.00 x 10-3 N.s/m2 You are asked to perform dimensional analysis to find the drag force on...
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