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In: Mechanical Engineering

1.      Air enters a converging-diverging nozzle with a total pressure of 1100 kPa and a total temperature...

1.      Air enters a converging-diverging nozzle with a total pressure of 1100 kPa and a total temperature of 127°C.  The exit area to throat area ratio is 1.8.  The throat area is 5 cm2.  The velocity at the throat is sonic and the diverging section acts as a nozzle.  Determine the following:

a.       The mass flow rate

b.      The exit pressure and temperature

c.       The exit Mach number

d.      The exit velocity

2.      The converging-diverging nozzle now has a throat area of 100 mm2 and an exit area of 160 mm2. The inlet flow is helium at a total pressure of 1 MPa and total temperature of 102°C. Determine the back pressure that will give sonic condition at the throat, but subsonic everywhere else.

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samet mamat answered 2 years ago
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