5.16 A converging-diverging nozzle is supplied from a large air reservoir. The
nozzle has a throat area of 10 cm² and an exit area of 20 cm². The pressure
and temperature in the reservoir are 300 kPa and 30 °C, respectively.
a Determine the ranges of back pressure over which (i) a normal shock wave
appears in the nozzle, (ii) oblique shock waves form at the exit, and (iii) the
expansion waves form.
b Calculate the mass flow rate through the nozzle for the case where a normal
shock wave appears at the exit plane.