Velocity and pipe diameter

  • Thread starter birddog
  • Start date
  • #1
2
0
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!
 

Answers and Replies

  • #2
62
1
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]​
 
  • #3
783
9
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:

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