In order to fest the flow the surface of an airplane wing, a model is built to a scale of 1/17 and is tested in water. The airplane is designed to fly at 850 km/h Take the temperature of both the air and the water to be 20°C. 850 km/h Part A What should the velocity of the model be in order to maintain the same Reynolds number?

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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In order to test the flow over the surface of an airplane wing, a model is built to a scale of 1/17 and is tested in water. The airplane
is designed to fly at 850 km/h. Take the temperature of both the air and the water to be 20°C.
850 km/h
Part A
What should the velocity of the model be in order to maintain the same Reynolds number?
Express your answer in kilometers per hour to three significant figures.
Hint 1. How to approach the problem
Recall the expression for the Reynolds number through v, V and Land equate the numbers of the prototype and of
the model.
Transcribed Image Text:In order to test the flow over the surface of an airplane wing, a model is built to a scale of 1/17 and is tested in water. The airplane is designed to fly at 850 km/h. Take the temperature of both the air and the water to be 20°C. 850 km/h Part A What should the velocity of the model be in order to maintain the same Reynolds number? Express your answer in kilometers per hour to three significant figures. Hint 1. How to approach the problem Recall the expression for the Reynolds number through v, V and Land equate the numbers of the prototype and of the model.
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