[solved] – Question 80324

At the inlet of a converging-diverging nozzle, the stagnation pressure is po = 860 kPa and stagnation temperature To = 79 °C. The outlet of the nozzle is connected to a back chamber in which the pressure can be controlled. There is only one normal shock in the nozzle where the area is As = 367 mm- and the static temperature right after the shock is T2 = 57 °C. The area of the nozzle outlet is 1200 mm2. 1. (40 marks) If the shock happens after the throat: a. What are the Mach numbers at the point just after the shock and at the exit? b. What is the mass flow rate of the flow? a. 2. (20 marks) If the flow at the nozzle inlet is subsonic and the shock happens after the throat: Calculate the area of the throat of the nozzle. b. Given that the condition at the nozzle inlet is fixed and the pressure in the back chamber is adjusted to the point that there is no more shock in the nozzle, what are the possible values of Mach number at the nozzle outlet? Explain your answer.

Expert Answer

---

Answer to At the inlet of a converging-diverging nozzle, the stagnation pressure is po = 860 kPa and stagnation temperature To = 79 °C……