Fluid Mechanics seventh edition by Frank M. White · Problem 9.4

Compressible Flow — Frank M. White

Physics — Fluid Mechanics · isentropic-flow-area-changes

Problem

Air flows isentropically through a duct. At section 1 the area is 0.05 m

^2

and

V_1 = 180

m/s,

p_1 = 500

kPa, and

T_1 = 470

K. Compute (a)

T_0

, (b)

\text{Ma}_1

, (c)

p_0

, and (d) both

A^*

and

\dot{m}

. If at section 2 the area is 0.036 m

^2

, compute

\text{Ma}_2

and

p_2

if the flow is (e) subsonic or (f) supersonic. Assume

k = 1.4