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A model test is to be conducted in a water tunnel using a 1: 20 model...
A model test is to be conducted in a water tunnel using a 1: 20 model...
A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature in the tunnel is maintained, so that is kinematic viscosity is half that of sea water. At what speed is the model test to be conducted to produce useful data for the prototype?
A model test is to be conducted in a water tunnel using a 1: 20 model...
A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature in the tunnel is maintained, so that is kinematic viscosity is half that of sea water. At what speed is the model test to be conducted to produce useful data for the prototype?
A model test is to be conducted in a water tunnel using a 1: 20 model...
A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature in the tunnel is maintained, so that is kinematic viscosity is half that of sea water. At what speed is the model test to be conducted to produce useful data for the prototype?
7) (2.5 points) A model test is to be conducted in a water tunnel using a...
7) (2.5 points) A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature in the tunnel is maintained, so that is kinematic viscosity is half that of sea water. At what speed is the model test to be conducted to produce useful data for the prototype?
6a. The aerodynamic drag acting on a cylinder at a very low Reynolds number (Stokes flow...
6a. The aerodynamic drag acting on a cylinder at a very low Reynolds number (Stokes flow or creeping motion) is a function of dynamic viscosity of fluid (u), diameter of cylinder (D) and freestream velocity (U). Find a non-dimensional parameter using dimensional analysis. 6b. A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature...
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...
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...
Problem 6: Measurements of drag force are made on a model automobile in a towing tank...
Problem 6: Measurements of drag force are made on a model automobile in a towing tank filled with fresh water. The model length scale is 1/5 that of the prototype. State the conditions required to ensure dynamic similarity between the model and prototype. Determine the fraction of the prototype speed in air at which the model test should be made in water to ensure dynamically similar conditions Measurements made at various speeds show that the dimensionless force ratio becomes constant...
The drag of a sonar transducer is to be predicted, based on wind tunnel test data....
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1-ft diameter sphere, is to be towed at 5 knots (i.e. 8.44 ft/s) in seawater at 40°F. The model is 6 in. in diameter and the drag of the model is measured to be 0.6 lbf for wind tunnel air temperature at 70°F 1) (5 pts) Use Buckingham Pi Theorem to prove that the drag coefficient Cd is related to the...
The drag of a sonar transducer is to be predicted, based on wind tunnel test data....
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1-ft diameter sphere, is to be towed at 5 knots (i.e. 8.44 ft/s) in seawater at 40°F. The model is 6 in. in diameter and the drag of the model is measured to be 0.6 lbf for wind tunnel air temperature at 70°F 1) (5 pts) Use Buckingham Pi Theorem to prove that the drag coefficient Cp is related to the...
A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature in the tunnel is maintained, so that is kinematic viscosity is half that of sea water. At what speed is the model test to be conducted to produce useful data for the prototype?
A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature in the tunnel is maintained, so that is kinematic viscosity is half that of sea water. At what speed is the model test to be conducted to produce useful data for the prototype?
A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature in the tunnel is maintained, so that is kinematic viscosity is half that of sea water. At what speed is the model test to be conducted to produce useful data for the prototype?
7) (2.5 points) A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature in the tunnel is maintained, so that is kinematic viscosity is half that of sea water. At what speed is the model test to be conducted to produce useful data for the prototype?
6a. The aerodynamic drag acting on a cylinder at a very low Reynolds number (Stokes flow or creeping motion) is a function of dynamic viscosity of fluid (u), diameter of cylinder (D) and freestream velocity (U). Find a non-dimensional parameter using dimensional analysis. 6b. A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature...
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...
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...
Problem 6: Measurements of drag force are made on a model automobile in a towing tank filled with fresh water. The model length scale is 1/5 that of the prototype. State the conditions required to ensure dynamic similarity between the model and prototype. Determine the fraction of the prototype speed in air at which the model test should be made in water to ensure dynamically similar conditions Measurements made at various speeds show that the dimensionless force ratio becomes constant...
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1-ft diameter sphere, is to be towed at 5 knots (i.e. 8.44 ft/s) in seawater at 40°F. The model is 6 in. in diameter and the drag of the model is measured to be 0.6 lbf for wind tunnel air temperature at 70°F 1) (5 pts) Use Buckingham Pi Theorem to prove that the drag coefficient Cd is related to the...
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1-ft diameter sphere, is to be towed at 5 knots (i.e. 8.44 ft/s) in seawater at 40°F. The model is 6 in. in diameter and the drag of the model is measured to be 0.6 lbf for wind tunnel air temperature at 70°F 1) (5 pts) Use Buckingham Pi Theorem to prove that the drag coefficient Cp is related to the...
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