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Velocity and pipe diameter

  1. Sep 17, 2009 #1
    Hello there,

    Im trying to figure this assignment question and I have hit hurdle. Can someone please help with figuring out what the velocity and pipe diameter will be??

    Question:
    In a plant 20m3(cubic)/h of water at 20 degrees C is to flow via gravity from a storage tank to another one. the difference in elevation is 15m and total pipe length is 50m.

    I thought it would be 9.81 m/s because of gravity but that seems too fast.
    Can someone please help.

    Thanks in advance!
     
  2. jcsd
  3. Sep 18, 2009 #2
    i would give bernoulli's equation a try

    [tex]p + \frac{1}{2} \rho v^2 + \rho g h = \rm{const} [/tex]​


    remember:

    [tex] \dot V = \frac{v}{A} [/tex]​
     
  4. Sep 18, 2009 #3
    Just to be technical on this.

    Bernoulli's equation only works well if the viscosity of the fluid can be neglected.

    Follow saunderson's post. I just wanted to throw the viscosity bit in.

    Thanks
    Matt
     
    Last edited: Sep 18, 2009
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