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How to find Velocity V2 with bernoulli Equation?

  1. Dec 2, 2007 #1
    Water is fed via a 200m long, 125mm diameter pipe to a field. The take is 12m elevation. the friction factor is 0.008 and k factors add up to 3.3.

    Pressure is all atmospheric and V1 is 0.

    2. Relevant equations

    Bernoulli Equation with the addition of friction, elevation and k factors

    3. The attempt at a solution

    V^2(2) = 2g+Z(2)+4f l/d + k

    I have managed to find around 4 different equations and think they are all wrong. I have excluded parts of the equation as they are equal to zero on boths parts of equation.

    What i need to do is solve V(2) and obtain the mass flow rate?

    Help is very much appreciated.
  2. jcsd
  3. Dec 3, 2007 #2


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    Staff Emeritus
    Science Advisor
    Gold Member

    What are V1 and V2? I'm not familiar with the term "take". Is this a simple gravity feed?

    Also, if you have not done this above, please write the original question EXACTLY as it was given to you.
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