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Unformatted text preview: and the wide section? 4) An airplane flies at 3km (standard atmosphere). The pitot tube mounted in front of the wing reads a pressure of 80,000 Pa. What is the speed of the plane? 5) Consider a fluid moving in rigid rotation about the line x=y=0: u=2y, v=2x. Describe the variation of pressure and total pressure around a circle of radius r. Describe the variation of pressure and total pressure along a radial line extending from r=0. Is Bernoullis equation true or false for this flow? 6) Would Bernoullis equation hold between points just in front of and just behind the compressor in a gas turbine engine? Specifically, would the stagnation pressure increase, decrease or stay the same through the compressor? 7) A sphere of radius 1m is initially full of water. Small holes are placed in the top (to let air in) and the bottom (to let the water drain out). The holes are 1cm in radius. How long would it take for the water to drain out once the bottom hole is opened?...
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 Fall '09

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