Consider a compressible adiabatic constant area duct flow with friction. Air with a stagnation pressure and temperature of Po=250KPa, and To=550 K enters the 5 -cm diameter duct at V₁ =161.5 m/s. For an average friction factor value of f=0.02, calculate: (Air: k=1.4, Cp=1.005KJ/kg.K,R=0.287KJ/kg.K)
a) The required length of the duct for the flow to be chocked at the exit, May = 1 ? What is the mass flow rate for this condition?
b) What would the velocity V₁ and mass flow rate be if the duct length is 13.25 m (same stagnation pressure and temperature).