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[10 points] A model of a submarine, 1:15 scale, is to be tested at 180 ft/s...
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...
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 submarine model (L/Lm 52 will be tested in fresh water under two different conditions: a)...
A submarine model (L/Lm 52 will be tested in fresh water under two different conditions: a) b) on the surface, where the prototype moves at 25 kt (knots) submerged, where the prototype moves at 2.9 kt Enforcing dynamic similarity in each case, find the model speed (m/s) and the ratio of drag force on the prototype in seawater compared to that for the model. For case (a), compute the ratio of model to prototype Reynolds numbers and discuss its significance....
3.5 2.5 1.5 0.5 8 10 Model velocity, ft/s Problem Statement: A sphere moving in a...
3.5 2.5 1.5 0.5 8 10 Model velocity, ft/s Problem Statement: A sphere moving in a fluid experiences a drag force that is known to be a function of the sphere diameter, velocity, density, and viscosity. You performed some lab tests on a 3 inch diameter sphere using a water tunnel. The figure below indicates the results of your model test. For the tests the viscosity of the water was 2.34 10sifi2 and the water density was 1.94slugslfi3. Based on...
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...
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 submarine model (L/Lm 52 will be tested in fresh water under two different conditions: a) b) on the surface, where the prototype moves at 25 kt (knots) submerged, where the prototype moves at 2.9 kt Enforcing dynamic similarity in each case, find the model speed (m/s) and the ratio of drag force on the prototype in seawater compared to that for the model. For case (a), compute the ratio of model to prototype Reynolds numbers and discuss its significance....
3.5 2.5 1.5 0.5 8 10 Model velocity, ft/s Problem Statement: A sphere moving in a fluid experiences a drag force that is known to be a function of the sphere diameter, velocity, density, and viscosity. You performed some lab tests on a 3 inch diameter sphere using a water tunnel. The figure below indicates the results of your model test. For the tests the viscosity of the water was 2.34 10sifi2 and the water density was 1.94slugslfi3. Based on...
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