Recent content by Smith972

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    C-D Nozzle - Mach No. >1 at Throat

    Measured the velocities via pressure sensor, we used the same pressure sensor at the centre of region 4. Mass flow-rate's just mdot = pAV, as far as I'm aware? Is it the formula or the figures causing the error?
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    C-D Nozzle - Mach No. >1 at Throat

    Mach No. = Velocity/Speed of Sound I've attached the Excel file I'm using https://www.dropbox.com/s/los1hgjurq7i3dn/GQztHN8eturu2QyxB2uX.xls?dl=0
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    C-D Nozzle - Mach No. >1 at Throat

    Sorry, I'd typed this up a bit quick... Essentially I'm working on a nozzle apparatus,taking temperature, and pressure readings at the three taps. Then velocity, ambient pressure and temperature at the top. The Mach number rises to a value higher than one at the throat, then drops to...
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    C-D Nozzle - Mach No. >1 at Throat

    Hi, As I understand, it is theoretically impossible to have a Mach No. higher than one at the throat of a Convergent Divergent Nozzle. I'm currently working on some calculations, and while I've been told the calculations are correct, I'm getting abnormally high Mach Numbers at the throat...