Question

consider isentropic flow of air from large reservoir through a converging nozzle to the atmosphere. the velocity of the gas at the inlet section of the nozzle is negligible. the pressure in the reservoir is 200kPa, while the atmospheric pressure is 100kPa. Suddenly, the atmospheric pressure drops to 90kPa. What will happen to the mass flow rate? 

          consider isentropic flow of air from large reservoir through a converging nozzle to the atmosphere. the velocity of the gas at the inlet section of the nozzle is negligible. the pressure in the reservoir is 200kPa, while the atmospheric pressure is 100kPa. Suddenly, the atmospheric pressure drops to 90kPa. What will happen to the mass flow rate?
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University Physics with Modern Physics
University Physics with Modern Physics
Hugh D. Young 14th Edition
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consider isentropic flow of air from large reservoir through a converging nozzle to the atmosphere. the velocity of the gas at the inlet section of the nozzle is negligible. the pressure in the reservoir is 200kPa, while the atmospheric pressure is 100kPa. Suddenly, the atmospheric pressure drops to 90kPa. What will happen to the mass flow rate?
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Transcript

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00:01 In this question we have to find the mass flow rate through the nozzle.
00:07 So first we have to check whether the nozzle is choked or not by calculate the value of the ratio between pb and p0, which is it will be 101 by 650, which is 0 .155, that is less than 0 .528, that is less than 0 .52.
00:33 So the nozzle is shoked and mt is 1...
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