A convergingdiverging nozzle operating at steady state has a

A converging-diverging nozzle operating at steady state has a throat area of 3.25 cm² and an exit area of 6 cm². Air enters the nozzle at 8 bar, 450 K, and a Mach number of 0.20 and flows isentropically as an ideal gas. If the diverging part acts as a supersonic nozzle, determine:

A) The back pressure for which a shock would stand in the exit plane

B) Determine back pressure when a normal shock stands in the diverging section where the pressure is 2 bar

Solution

The back pressure is about 6bar.

The normal back pressure is when shock stands in diverging section is over.