Question: Compressible pipe flow with heat addition, Sec. 9.8, assumes constant momentum (p + V2) and constant mass flow but variable stagnation enthalpy. Such a flow

Compressible pipe flow with heat addition, Sec. 9.8, assumes constant momentum (p + ρV2) and constant mass flow but variable stagnation enthalpy. Such a flow is often called Rayleigh flow, and a line representing all possible property changes on an temperature-entropy chart is called a Rayleigh line. Assuming air passing through the flow state p1 = 548 kPa, T1 = 588 K, V1 = 266 m/s, and A = 1 m2, draw a Rayleigh curve of the flow for a range of velocities from very low (Ma 1) to very high (Ma 1). Comment on the meaning of the maximum-entropy point on this curve.

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