How Do Velocity and Pipe Diameter Affect Water Flow in Gravity-Fed Systems?

[birddog]

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!

 

[CFDFEAGURU]

See your first thread.

https://www.physicsforums.com/showthread.php?t=338253

Thanks
Matt