Question

1. (15 pts) A converging-diverging nozzle has an area ratio of 2, i.e., the exit (or duct) area is 2 times the throat area, which is 80 cm2. The nozzle is supplied from a tank containing air (y 1.4 and R 287 J/kg K) at 100 kPa and 300K. For both cases shown in Fig. , find the maximum mass flow possible through the nozzle and the range of back pressures over which the mass flow can be attained. For case B, a constant-area insulated duct of length 2 m and f 0.015 is added to the nozzle Case A Case B Figure 1. Two types of tank with converging-diverging nozzle

Answer 1

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