Consider frictionless flow of air in a constant-area

duct. At section 1 , M1 5 0.50, p1 5 1.10 MPa (abs), and

*These problems require material from sections that may be omitted without loss of continuity in the text material.

780 Chapter 13 Compressible Flow

T01 5 333 K. Through the effect of heat exchange, the Mach

number at section 2 is M2 5 0.90 and the stagnation temperature is T02 5 478 K. Determine the amount of heat

exchange per unit mass to or from the fluid between sections

1 and 2 and the pressure difference, p1 2 p2.