Flow rate of water out of a pipe

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SUMMARY

The flow rate of water out of a 12-inch pipe at the bottom of a 10-foot deep man-made lake can be calculated using the formula √(2gh/ρ). In this formula, g represents the acceleration due to gravity at 9.81 cm/sec², h is the height difference between the lake's surface and the pipe's exit, and ρ is the density of water. This theoretical calculation assumes the pipe is unobstructed and functioning properly.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Familiarity with basic physics equations
  • Knowledge of units of measurement (e.g., feet, centimeters)
  • Basic understanding of water density
NEXT STEPS
  • Research the effects of pipe diameter on flow rate
  • Learn about Bernoulli's principle in fluid dynamics
  • Investigate methods for measuring actual flow rates in pipes
  • Explore the impact of pipe obstructions on flow efficiency
USEFUL FOR

Engineers, hydrologists, and anyone involved in water management or hydraulic engineering will benefit from this discussion.

Caerus1
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Hello,
Am the owner of a 90 acre man made lake and am trying to calculate the flow out of 12 inch pipe at the bottom of the lake. The lake is approximately 10 feet deep. Can someone point me in the right direction on how to solve this question?
 
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Welcome to PF!

Hello Caerus1! Welcome to PF! :smile:

If it's a real pipe, it's probably blocked, but the theoretical speed is √(2gh/ρ), where g is 9.81 cm/sec2, h is the difference in height between the surface of the lake and the far end of the pipe, and ρ is the density of water. :wink:
 

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