- Ints O 2 D 0 025m Po 27mpa To 400k 0 6m F 0 005 Ariage Fanning Friction Tutor Factor Recall F Regra Tw Air At S 1 (102.56 KiB) Viewed 20 times
- Ints O 2 D 0 025m Po 27mpa To 400k 0 6m F 0 005 Ariage Fanning Friction Tutor Factor Recall F Regra Tw Air At S 2 (190.25 KiB) Viewed 20 times
ints O (2 D=0.025m Po=27MPa To = 400k 0.6m f=0.005 (Ariage Fanning friction tutor) Factor) recall f= regra Tw
Air at stagnation temperature 460 K and stagnation pressure 2.70 MPa flows isentropically through a converging nozzle, as shown in the figure. The nozzle feeds an adiabatic, constant- area duct with friction having diameter D = 0.025 meters, and its length is L2 = 0.60 meters. The average Fanning friction factor is f = 0.005, (Recall that the Darcy or Moody friction factor is four times the Fanning friction factor.) Determine the maximum mass-flow-rate through the system, and the range of back-pressures which will allow this maximum mass-flow-rate. Determine the stagnation temperature and stagnation pressure at the exit of the duct (for maximum mass-flow-rate). Compare the preceding results with the same results which are obtained for flow through the isentropic nozzle in the absence of the constant-area duct.