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Homework Help: Bernoullis Equation

  1. May 3, 2007 #1
    When using Bernoullis equation, part of it requires velocity to be input as part of it.

    I am given flow rate of 5.00 m^3 per second. I am also told the diameter of a pipe that is 0.6 m. How do I calculate velocity?

    I am assuming that velocity isnt simply 5.00 m/s

    I know that flow rate (Q) = Area x velocity, therefore

    velocity = Q / Area

    I also know that Area is pi r^2,

    thus I think that velocity = 5.00 / (pi * 0.15^2) = 70.7 m per second

    Is this correct?

    Many thanks for your time
    Last edited: May 3, 2007
  2. jcsd
  3. May 3, 2007 #2
    Ok, I now know the formula for solving velocity from flow rate and pipe diameter.

    If anyone is interested its

    4 * flow rate / (pi * (pipe diameter)^2)
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