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Question: btme2223 applied fluid mechanics q4 an air tank of volume...

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BTME2223 APPLIED FLUID MECHANICS Q4. An air tank of volume 1.5 m is initially at absolute pressure of 800 kPa and 20°C. Att0s air in the tank begins to exhaust through a converging nozzle to atmospheric conditions where the absolute pressure is 101.325 kPa. The throat area is 0 75 cm Ath 0.75 cm? Potmo 800 kPa = 1.5 m? Figure Q4 a) Determine the mass flow rate in kg/s. (6 marks) b) Determine the time required to reduce the pressure in the tank to 500 kPa. (8 marks) c) Determine the time at which the nozzle ceases being chocked (5 marks) d) Suggest a recommendation and explain how to overcome the choke flow. Include (6 marks) appropriate diagraim and equation to support your explanation [Total: 25 marks The following equations may be used where appropriate without proof γ+1 Mai (r + 1)-Mai Ma Mai-1 ty This question paper consists of 4 questions on S printed pages.

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