pipe flow calc
pipe flow calc
(OP)
i have a leaking pipe, all i know about it is size and pressure...i am trying to find the Qout of the leak...
so how do i relate the water pressure to a velocity?
so how do i relate the water pressure to a velocity?
"Don't worry about the world coming to an end today. It's already tomorrow in Australia."
---Charles Schulz
"Beer is living proof that God loves us and wants us to be happy."
---Benjamin Franklin





RE: pipe flow calc
Q= Velocity x area of cross section
RE: pipe flow calc
"Don't worry about the world coming to an end today. It's already tomorrow in Australia."
---Charles Schulz
"Beer is living proof that God loves us and wants us to be happy."
---Benjamin Franklin
RE: pipe flow calc
RE: pipe flow calc
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: pipe flow calc
RE: pipe flow calc
RE: pipe flow calc
Basically, I just had to go out and watch the dang thing and record two water levels, and then find the change in volume vs. the time it took to raise the level... I know that it comes out low because of water penetration into the soil... but its probably within 15% cause by the time i got out there most of the soil was saturated.
there were no meters, no valves....it turned out that back in the day, whoever installed this valve used the wrong one which is what actually failed.
I really dont know why we needed to know it dick, i just know my boss told me to find out... maybe to charge them for the water they lost?
"Don't worry about the world coming to an end today. It's already tomorrow in Australia."
---Charles Schulz
"Beer is living proof that God loves us and wants us to be happy."
---Benjamin Franklin
RE: pipe flow calc
First determine area of hole.
Secondly measure the vertical height between the hole and the ground.
Thirdly, measure the horizontal distance from the hole in the pipe to the center of the water pattern on the ground. This location should be preferably at the same ground elevation at which you measured the vertical height.
Fouthly, applying the trajectory equations that you had in physics or calculus, calculate the horizontal velocity of the water coming out of the hole.
Lastly, apply the well known equation Q=C x velocityx hole area; C is a coefficient and if you use .6, your Q will be in the ball park.
Note the water can also shoot out of the pipe at any angle except vertically and that angle has to be measured; also you can have differences in ground elevation but these two situations would complicate your trajectory equations.
RE: pipe flow calc
RE: pipe flow calc