Question: Consider subsonic airflow through a 20-cmdiameter adiabatic duct with inlet conditions of T 1 = 330 K, P 1 = 180 kPa, and Ma 1

Consider subsonic airflow through a 20-cmdiameter adiabatic duct with inlet conditions of T₁ = 330 K, P₁ = 180 kPa, and Ma₁ = 0.1. Taking the average friction factor to be 0.02, determine the duct length required to accelerate the flow to a Mach number of unity. Also, calculate the duct length at Mach number intervals of 0.1, and plot the duct length against the Mach number for 0.1 ≤ Ma ≤ 1. Discuss the results.

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