Fox and McDonalds Introduction to Fluid Mechanics Tenth Edition
A drone is designed to operate at 20 m/s in air at standard conditions. A model is constructed to 1:20 scale and tested in a variablepressure wind tunnel at the same air temperature to determine the drag on the drone. Determine the groups necessary to obtain dynamic similarity. Determine the wind tunnel pressure necessary for model tests at 75 m/s. Determine drag of the prototype if the measured model drag force is 250 N
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opJD,d,p,,).determine the appropriate pi terms The drag on an airplane cruising at 240 mph in air...
opJD,d,p,,).determine the appropriate pi terms The drag on an airplane cruising at 240 mph in air at 1 atm and 300 K is to be determined from tests on a 1:10 scale model in a pressurized wind tunnel. Let the geometry of the prototype be represented by I.The fluid viscosity is u. The prototype drag is D. 4. To have the fluid compressibility between the model and the prototype, what must the velocity of the wind tunnel air be if...
Question 03 (25 marks) A rotodynamic machine's shaft power (P) and pressure rise (Ps) on the...
Question 03 (25 marks) A rotodynamic machine's shaft power (P) and pressure rise (Ps) on the volume flow rate (Q), diameter of the rotor (D), rotating speed (N), density of the liquid (p) and the dynamic viscosity (u) of the liquid. Obtain the corresponding dimensionless groups. I. across the unit depend (10 marks) SLIIT faculty of engineering expect to import wind tunnel setup that can deliver discharge of 4.8 m'/s with the total pressure rise of 75 mm water column...
A model of a submarine, 1:15 scale is to be tested at 180ft/s in a wind...
A model of a submarine, 1:15 scale is to be tested at 180ft/s in
a wind tunnel with standard sea-level air, while the prototype will
be operated in sea water.
A model of a submarine, 1:15 scale, is to be tested at 180 ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in seawater. Determine the speed of the prototype to ensure Reynolds number similarity. Hint: The Reynolds number of the model and prototype...
[10 points] A model of a submarine, 1:15 scale, is to be tested at 180 ft/s...
[10 points] A model of a submarine, 1:15 scale, is to be tested at 180 ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in seawater. Determine the speed of the prototype to ensure dynamic similarity 4. Properties of air: p 2.38x103 slugs/ft3, 3.74 x 107 Ib-s/ ft2 Properties of seawater: 1.99 slugs/ft3JL-2.51 x 10-5 lbs/ ft.
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...
EXAMPLE 7-8 Lift on a Wing Some aeronautical engineers are designing an airplane and wish to...
EXAMPLE 7-8 Lift on a Wing Some aeronautical engineers are designing an airplane and wish to predict the lift produced by their new wing design (Fig. 7-31). The chord length L of the wing is 1.12 m, and its planform area A (area viewed from the top when the wing is at zero angle of attack) is 10.7 m2. The prototype is to fly at V = 52.0 m/s close to the ground where T = 25°C. They build a...
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...
human-powered torpedo is being designed for purpose of this competitions. The next year engineering students modeling is to determine the skin friction drag of the torpedo which is acting on L-4...
human-powered torpedo is being designed for purpose of this competitions. The next year engineering students modeling is to determine the skin friction drag of the torpedo which is acting on L-4 carea (perimeter times the length). The overall length of the prototype torpedo 4.5 m and the diameter D m. Prototype Specification requires the torpedo to travel fully in freshwater water (a lake) at T 20 C with velocity V-2.50m/s. The one-fourth el is used for testing in their universitys...
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...
opJD,d,p,,).determine the appropriate pi terms The drag on an airplane cruising at 240 mph in air at 1 atm and 300 K is to be determined from tests on a 1:10 scale model in a pressurized wind tunnel. Let the geometry of the prototype be represented by I.The fluid viscosity is u. The prototype drag is D. 4. To have the fluid compressibility between the model and the prototype, what must the velocity of the wind tunnel air be if...
Question 03 (25 marks) A rotodynamic machine's shaft power (P) and pressure rise (Ps) on the volume flow rate (Q), diameter of the rotor (D), rotating speed (N), density of the liquid (p) and the dynamic viscosity (u) of the liquid. Obtain the corresponding dimensionless groups. I. across the unit depend (10 marks) SLIIT faculty of engineering expect to import wind tunnel setup that can deliver discharge of 4.8 m'/s with the total pressure rise of 75 mm water column...
A model of a submarine, 1:15 scale is to be tested at 180ft/s in
a wind tunnel with standard sea-level air, while the prototype will
be operated in sea water.
A model of a submarine, 1:15 scale, is to be tested at 180 ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in seawater. Determine the speed of the prototype to ensure Reynolds number similarity. Hint: The Reynolds number of the model and prototype...
[10 points] A model of a submarine, 1:15 scale, is to be tested at 180 ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in seawater. Determine the speed of the prototype to ensure dynamic similarity 4. Properties of air: p 2.38x103 slugs/ft3, 3.74 x 107 Ib-s/ ft2 Properties of seawater: 1.99 slugs/ft3JL-2.51 x 10-5 lbs/ ft.
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...
EXAMPLE 7-8 Lift on a Wing Some aeronautical engineers are designing an airplane and wish to predict the lift produced by their new wing design (Fig. 7-31). The chord length L of the wing is 1.12 m, and its planform area A (area viewed from the top when the wing is at zero angle of attack) is 10.7 m2. The prototype is to fly at V = 52.0 m/s close to the ground where T = 25°C. They build a...
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...
human-powered torpedo is being designed for purpose of this competitions. The next year engineering students modeling is to determine the skin friction drag of the torpedo which is acting on L-4 carea (perimeter times the length). The overall length of the prototype torpedo 4.5 m and the diameter D m. Prototype Specification requires the torpedo to travel fully in freshwater water (a lake) at T 20 C with velocity V-2.50m/s. The one-fourth el is used for testing in their universitys...
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...
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