Mass flow rate calculation from velocity contour in pipe

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SUMMARY

The discussion focuses on calculating mass flow rate from a velocity contour plot in a circular cross-section pipe, particularly when the flow is non-axisymmetric. Participants emphasize the importance of integrating the velocity profile across the area to determine mass flow rate accurately. Key considerations include the behavior of velocity at the pipe walls, where it does not reach zero due to the effects of viscosity and turbulence. Understanding these factors is crucial for accurate flow analysis.

PREREQUISITES
  • Fluid dynamics principles, particularly regarding mass flow rate calculations
  • Knowledge of velocity contour plots and their interpretation
  • Understanding of non-axisymmetric flow characteristics
  • Familiarity with computational fluid dynamics (CFD) tools for flow analysis
NEXT STEPS
  • Research methods for integrating velocity profiles in circular cross-sections
  • Learn about the Navier-Stokes equations and their application in non-axisymmetric flows
  • Explore computational fluid dynamics (CFD) software such as ANSYS Fluent for practical applications
  • Investigate the effects of wall boundary conditions on velocity profiles in pipe flow
USEFUL FOR

Engineers, fluid dynamics researchers, and anyone involved in the analysis of flow behavior in pipes, particularly in non-axisymmetric conditions.

ca2n
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Hello all,

Looking for ideas on how to calculate mass flow rate from a velocity contour plot. The cross-sectional area is circular. An example of the velocity contour plot is shown in the figure below:

38230090532_0d4a696530_b.jpg


In most of the cases (as exemplified above) the flow is non-axisymmetric. Any suggestions welcomed. Thank you in advance.
 

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Why is it non-symmetric?
 
Chestermiller said:
Why is it non-symmetric?

As a follow-up, why doesn't the velocity go to zero at the walls?
 
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