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Homework Help: Compressive Flow Experiment

  1. Jan 14, 2009 #1
    1. The problem statement, all variables and given/known data
    Wondering if anyone could give me a hand, I have created the attached graph. It shows the variations of pressure in the nozzle for different supply pressures and back pressures, in the form, P/Po vs position of the nozzle. and not too sure what its showing

    2. Relevant equations
    Wondering if anyone can help me figure out what the graph is showing??

    3. The attempt at a solution
  2. jcsd
  3. Jan 14, 2009 #2
    I didn't mention that the nozzle a converging- diverging nozzle. Also I know that at the throat of the nozzle the fluid cannot reach speeds above Mach 1, sonic speeds. However i am wondering where on the graph this relates too.\

    I also know that the Pc/Po(critical pressure ratio) for air is 0.5283 and it seems that as the pressure difference becomes larger the closer the P/Po becomes to the critical ratio value.

    Any help will be greatly appreciated as this has to be submitted by friday.

    Last edited: Jan 15, 2009
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