Answer Happy

Helium steadily flows out of a reservoir with pressure P. = 10 bar and temperature T. = 293 K through a converging-diverging nozzle with a throat are of 4 = 2 cm². The area at the exit of the nozzle is Ą. = 4.5 cm². Helium gas can be considered an ideal gas with y= 1.66, and molar mass m=4.0 g/mol. The ideal gas constant is R=8.31 J/(mol·K). a. Determine the critical pressure and critical mass flux, i.e. the pressure and mass flux for sonic conditions in the throat. b. Determine the mass flux if the pressure at the exit of the nozzle is pe =4 bar c. Determine the mass flux if the pressure at the exit of the nozzle is Pe = 7 bar d. Determine the mass flux if the pressure at the exit of the nozzle is pe =9.5 bar