Estimation of the initial mass flow


Solve the below:

Q: An air tank of volume 1.5 m3 is at 800 kPa and 20°C when it begins exhausting through a converging nozzle to sea-level conditions. The throat area is 0.75 cm2. Estimate

(a) The initial mass flow;

(b) The time to blow down to 500 kPa; and

(c) The time when the nozzle ceases being choked.

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Mechanical Engineering: Estimation of the initial mass flow
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