Problem 4. A converging-diverging nozzle, a with throat area of A = 10 cm?, is attached to a large tank in which the pressure and temperature are maintained at Po = 8.0 bar and To = 350 K. The nozzle exit area is A. = 14 cm?. (a) For a throat Mach number of Ma =1 determine the exit Mach number corresponding to the following three cases: case I (isentropic subsonic flow, Maj), case II (isentropic supersonic or "design conditions" flow, Ma1), and case III (flow with a normal shock in the exit plane, Ma). (b) Determine the back pressures corresponding to all three cases: P1. PI, and Pm . (c) Sketch the corresponding T-s diagram for all three cases. (d) Briefly discuss how changing the exit

Elements Of Electromagnetics
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Problem 4. A converging-diverging nozzle, a with throat area of A = 10 cm?, is attached to a large tank in which the
pressure and temperature are maintained at Po = 8.0 bar and To = 350 K. The nozzle exit area is A. = 14 cm?.
(a) For a throat Mach number of Ma, = 1 determine the exit Mach number corresponding to the following three cases:
case I (isentropic subsonic flow, Maj), case II (isentropic supersonic or "design conditions" flow, Maŋ), and case III
(flow with a normal shock in the exit plane, Ma). (b) Determine the back pressures corresponding to all three cases:
P1. Pu, and P. (c) Sketch the corresponding T-s diagram for all three cases. (d) Briefly discuss how changing the exit
area changes the design Mach number.
Transcribed Image Text:Problem 4. A converging-diverging nozzle, a with throat area of A = 10 cm?, is attached to a large tank in which the pressure and temperature are maintained at Po = 8.0 bar and To = 350 K. The nozzle exit area is A. = 14 cm?. (a) For a throat Mach number of Ma, = 1 determine the exit Mach number corresponding to the following three cases: case I (isentropic subsonic flow, Maj), case II (isentropic supersonic or "design conditions" flow, Maŋ), and case III (flow with a normal shock in the exit plane, Ma). (b) Determine the back pressures corresponding to all three cases: P1. Pu, and P. (c) Sketch the corresponding T-s diagram for all three cases. (d) Briefly discuss how changing the exit area changes the design Mach number.
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