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In: Mechanical Engineering

A converging-diverging nozzle is designed to operate with an exit Mach number of 2. The nozzle...

A converging-diverging nozzle is designed to operate with an exit Mach
number of 2. The nozzle is supplied from an air reservoir at 600 kPa and temperature
is 300 K. The throat area of the nozzle is 5 cm2
.
Determine:
(a) The ratio of exit-to-throat area and exit area
(b) Given the area ratio in part (a), find the range of back pressure over which the
nozzle is choked. What is the critical pressure and design pressure?
Also, calculate the mass flow rate when the nozzle is choked and at design
conditons.
(c) Determine the mass flow rate for a back pressure of 450 kPa and 500 kPa.
(d) Determine the mass flow rate for a back pressure of 0 kPa.
(e) Plot pressure variation along centerline of nozzle and mark all the points (back
pressures) on it.
(f) Use excel sheet to plot mass variation Vs back pressures and mark all points
on it.

Solutions

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samet mamat answered 1 year ago
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