Calculating Change in Flow for P1 & D1

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SUMMARY

The discussion focuses on calculating changes in flow rate (Q) based on variations in pressure (P1) and pipe diameter (D1) under laminar flow conditions. Users are advised to utilize the affinity laws and the Hagen-Poiseuille equation for accurate calculations. These tools provide a mathematical framework to determine how flow rate is affected by changes in pressure and diameter without altering the pipe material. The discussion emphasizes the importance of these equations in fluid dynamics for precise flow management.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Familiarity with the Hagen-Poiseuille equation
  • Knowledge of affinity laws in fluid mechanics
  • Basic concepts of laminar flow characteristics
NEXT STEPS
  • Study the Hagen-Poiseuille equation in detail
  • Research the application of affinity laws in fluid systems
  • Explore the effects of pipe diameter changes on flow rate
  • Learn about laminar vs. turbulent flow transitions
USEFUL FOR

Engineers, fluid mechanics students, and professionals involved in hydraulic systems design and optimization will benefit from this discussion.

viadanasi
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If I have a flow , Q1 l/sec and a pressure P1 Bar , Pipe Diameter D1
how can I work out the change in flow if either/or both the Pressure
or Pipe Diameter change. Assuming laminar flow and pipe material
do not change.

Thanks
 
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Welcome to PF!

Start with the affinity laws:
http://www.engineeringtoolbox.com/affinity-laws-d_408.html
 
viadanasi said:
If I have a flow , Q1 l/sec and a pressure P1 Bar , Pipe Diameter D1

how can I work out the change in flow if either/or both the Pressure

or Pipe Diameter change. Assuming laminar flow and pipe material

do not change.
Thanks
Use Hagen poiseulle equation

Chet
 

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