Question: 9 . 2 8 . Air with a stagnation pressure of 7 0 0 kPa flows through a convergent - divergent nozzle with an exit

9.28. Air with a stagnation pressure of 700 kPa flows through a convergent- divergent nozzle with an exit-to-throat area ratio of 3. The flow in this nozzle can be assumed to be isentropic. The air from the nozzle enters a well-insulated duct with a length-to-diameter ratio of 20. The mean friction factor is 0.002. The air from the duct is discharged into a large reservoir in which the pressure is 100 kPa. Find the Mach numbers at the inlet and exit of the duct.
9 . 2 8 . Air with a stagnation pressure of 7 0 0

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