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Homework Help: Fluid Mechanics Question

  1. May 6, 2009 #1
    ive have recently conducted a lab for investigating the behaviour of fluids in a pipe system
    the fluid chosen was an oil with a density of 853 kg m-3

    i used pitot-traversing gear to measure the pressure at different positions from the wall of the pipe (to the centre and then assumed a mirror image beyond the centre of the pipe). i have come to plot these values on the graph and have had unexpected results. i have checked over these many times, and according to the values this is the velocity profile i obtain:

    http://img133.imageshack.us/img133/9461/velocityprofilefortest0n.jpg [Broken]

    whats causes the dip at the centre of the pipe? is this cause by turbulent flows? or have i simply got the wrong results? i have checked with others whom i conducted the experiment together and obtain similar results, so if the results are incorrect there may be something wrong with the equipment. or is this simply a phenomena of some sort?

    any suggestions would be of immense help
    many thanks, pavadrin
    Last edited by a moderator: May 4, 2017
  2. jcsd
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