Air flows down a pipe with a diameter, D=3 mm. The inlet conditions are given as: M₁ = 0.06; total pressure, Poi = 1500 kPa absolute; total temperature, Toi = 25°C. The friction coefficient is, f = 0.005. a) At what pipe length would the flow be choked under the given inlet conditions? b) If the exit Mach number is, M₂ = 0.5, calculate: pipe length, L, and exit pressure, P2. Assume that the flow in the pipe is adiabatic. Use y-1.4 and Cp 1004.5 J/(kg. K).

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Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?