Recent content by dragioden

  1. dragioden

    How is the head-flow curve dependant on reynolds number

    i see, i dont really think its that big a deal i was just asked to explain find whether Ch was affected by the speed of the impeller and the one who asked me to do so (lecturer) suggested that i look into reynolds number if it did appear to have some change. thanks for the help.
  2. dragioden

    How is the head-flow curve dependant on reynolds number

    the graph it attached below as for the head coefficient in this case would be the dimensionless gravitational constant you mentioned. as the equation i had used to calculate the head coefficient was Ch=gH/(Nd)^2
  3. dragioden

    How is the head-flow curve dependant on reynolds number

    this the diagram given for the experiment layout, the second pump has been isolated for it, a transparent rubber tubing carries the water from the pump through the control valve. This valve controls how much water is let through at a time to the weir channel. Just as the water is about to leave...
  4. dragioden

    How is the head-flow curve dependant on reynolds number

    Homework Statement i trying to figure out why the head-flow curve changes at the speeds of 90, 80 and 70 revs and was told that i might want to look into reynolds number for this as the head coefficient is somewhat dependant on this. Homework Equations Ch=gH/(Nd)^2 Cf=Q/Nd^3 pi=f(Q/Nd^3, re)...
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