A divergent-convergent nozzle has the proportions shown in Table 6.1. Air (= 1.40, M= 29.0) enters the

A divergent-convergent nozzle has the proportions shown in Table 6.1. Air (γ= 1.40, M= 29.0) enters the nozzle from a reservoir in which the pressure is 20 atm abs and the temperature is 550 K. Plot the pressure, the temperature, and the Mach number versus the length of the nozzle when

(a) The flow rate is a maximum without shock and with subsonic discharge

(b) The flow is isentropic and the discharge is supersonic.

Table 6.1

Transcribed Image Text:

TABLE 6.1 Data in Prob. 6.3 Length Reservoir 0 0.025 0.050 0.075 0.100 0.150 0.200 Diameter 8 0.875 0.700 0.575 0.500 0.375 0.300 Length Throat 0.30 0.40 0.50 0.60 0.70 0.80 0.90 Receiver 1.00 Diameter 0.25 0.28 0.35 0.45 0.56 0.68 0.84 1.00