Calculating flow through parallel pipes

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SUMMARY

This discussion focuses on calculating flow through two parallel pipes, specifically an 8-inch pipe with a 1-inch branch. The key principle established is that the pressure drop (delta P) is equal for both streams, and flow is determined by the resistance in the pipes. The participants emphasize the need to calculate the resistance accurately to determine flow rates, highlighting the importance of knowing the velocity and cross-sectional area of the pipes involved.

PREREQUISITES
  • Understanding of fluid dynamics principles, specifically flow rates and pressure drops.
  • Familiarity with pipe resistance calculations and relevant equations.
  • Knowledge of cross-sectional area calculations for circular pipes.
  • Basic concepts of velocity in fluid flow.
NEXT STEPS
  • Research the Darcy-Weisbach equation for calculating pressure loss in pipes.
  • Learn about flow rate calculations in parallel pipe systems.
  • Study methods for measuring or estimating fluid velocity in pipes.
  • Explore software tools for simulating fluid flow in piping systems.
USEFUL FOR

Engineers, students in fluid mechanics, and anyone involved in designing or analyzing piping systems will benefit from this discussion.

kollarjd
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Homework Statement



I am trying to calculate the flow through two parallel pipes. From an 8in line, a 1in line T's off and then joins back together downstream.

How do I go about solving a problem like this? The delta P should be equal for both streams so the flow should be determined by the resistance in the pipe, correct? I am having trouble calculating the resistance in the pipe...

Homework Equations





The Attempt at a Solution


 
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Flow (Q) is the velocity times the area.

Since you have the diameter of the pipe you can find the cross-sectional area then all you need is the velocity.

With what you've given so far I don't see a way to calculate the velocity. Are you leaving something out.?
 

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