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Next: Entrance Mach number, M1, Up: The Pressure Ratio, P2/P1, Previous: Fanno Flow Short 4fL/D Index Long 4fL/DIn the case of reduction of the back pressure results in the same process as explained in the short up to point . However, point c in this case is different from point c at the case of short tube . In this point the exit Mach number is equal to 1 and the flow is double shock. Further reduction of the back pressure at this stage will not ``move'' the shock wave downstream the nozzle. At point c or location of the shock wave, is a function entrance Mach number, and the ``extra'' . The is no analytical solution for the location of this point c. The procedure is (will be) presented in later stage.
Next: Entrance Mach number, M1, Up: The Pressure Ratio, P2/P1, Previous: Fanno Flow Short 4fL/D Index Created by:Genick Bar-Meir, Ph.D. On: 2007-11-21 |