# Air is flowing through a 6-cm-diameter adiabatic duct with inlet conditions of V 1 = 120 m/s,

## Question:

Air is flowing through a 6-cm-diameter adiabatic duct with inlet conditions of V_{1} = 120 m/s, T1 = 400 K, and P1 5 100 kPa and an exit Mach number of Ma_{2} = 1. To study the effect of duct length on the mass flow rate and the inlet velocity, the duct is now extended until its length is doubled while P_{1} and T_{1} are held constant. Taking the average friction factor to be 0.02, calculate the mass flow rate, and the inlet velocity, for various extension lengths, and plot them against the extension length. Discuss the results.

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**Related Book For**

## Fluid Mechanics Fundamentals And Applications

**ISBN:** 9780073380322

3rd Edition

**Authors:** Yunus Cengel, John Cimbala