Equation for Water Flow Over Pipe Circular Hole

AI Thread Summary
The discussion centers on determining the equation for water flow from a circular hole in a pipe positioned 5 meters above the ground. The flow rate and diameter of the pipe are critical factors influencing the water level (h) over time. Additional details, such as whether the pipe is draining itself or emptying a reservoir, are necessary for a precise equation. Resources like HDS5 Hydraulic Design of Highway Culverts are recommended for further insights into culvert flow dynamics. Understanding these variables is essential for accurately modeling the water flow scenario.
Moayd Shagaf
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suppose a water falling from pipe that above the ground with 5 meters,
what is the equation that describe the level of water ( h) from pipe the hole at every moment of time? consider the pipe hole is circle

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I'm not sure there is a simple equation for that, but it would depend on the diameter of the pipe and flow rate of the water.
 
Moayd Shagaf said:
suppose a water falling from pipe that above the ground with 5 meters
One might need more information.
Is the pipe draining itself, with no more water being added than initially. Length of pipe might be useful.
Or a pipe that is emptying say a reservoir with a small head, such as a culvert from one side of the road to the other into a ditch.
Look up channel flow and you might find something there.
 
If this is a culvert problem, then the definitive resource is HDS5 Hydraulic Design of Highway Culverts. Google the title, it's available free online from the Federal Highway Administration.
 

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