Air flows through a converging nozzle and then a
length of insulated duct. The air is supplied from a tank
where the temperature is constant at 59F and the pressure is
variable. The outlet end of the duct exhausts to atmosphere.
When the exit flow is just choked, pressure measurements
show the duct inlet pressure and Mach number are 53.2 psia
and 0.30. Determine the pressure in the tank and the temperature, stagnation pressure, and mass flow rate of the
outlet flow, if the tube diameter is 0.249 in. Show on a Ts
diagram the effect of raising the tank pressure to 100 psia.
Sketch the pressure distribution versus distance along the
channel for this new flow condition.