I am still stuck with this question, is anyone able to solve this? 10.18. In Fig

Question

I am still stuck with this question, is anyone able to solve this?

10.18. In Figure P10.18. points 1 and 2 represent flows on the same Rayleigh line (same mass flow rate, same area, same impulse function) and are located such that s1 = s2 as shown. Now imagine that we take the fluid under conditions at 1 and isentropically expand to 3. Further, let's imagine that the fluid at 2 undergoes an isentropic compression to 4. (a) If 3 and 4 are coincident state points (same T and s), prove that A3 is greater than, equal to, or less than A4. (b) Now suppose that points 3 and 4 are not necessarily coincident but it is known that the Mach number is unity at each point (i.e., 3 = 1s* and 4 2s*). i) Is V3 equal to, greater than, or less than V4? (ii) Is A3 equal to, greater than, or less than A4?

Explanation / Answer

a

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