Friction losses due to expansion vs losses due to contract

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SUMMARY

The discussion clarifies that friction losses in pipes due to sudden expansion are significantly higher than those due to contraction. This is attributed to the turbulence and viscosity effects that occur during flow transitions. The participants emphasize that the perceived expansion or contraction is a result of flow dynamics rather than physical changes in the pipe structure. Understanding these principles is crucial for effective fluid dynamics analysis in engineering applications.

PREREQUISITES
  • Fluid dynamics principles
  • Understanding of turbulence and viscosity
  • Knowledge of pipe flow characteristics
  • Friction loss calculations in piping systems
NEXT STEPS
  • Research the impact of sudden expansion on flow turbulence
  • Study the Darcy-Weisbach equation for friction loss calculations
  • Explore computational fluid dynamics (CFD) simulations for pipe flow
  • Learn about the effects of pipe diameter changes on flow behavior
USEFUL FOR

Engineers, fluid mechanics students, and professionals involved in pipeline design and analysis will benefit from this discussion, particularly those focused on optimizing fluid flow and minimizing energy losses in piping systems.

foo9008
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Homework Statement


i was told that the losses during expansion are usually much higher than losses during contraction in pipe . is it true?why?

Homework Equations

The Attempt at a Solution

 
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foo9008 said:

Homework Statement


i was told that the losses during expansion are usually much higher than losses during contraction in pipe . is it true?why?

Homework Equations

The Attempt at a Solution

Friction of what on what?

Edit: having seen your next thread, I realize the pipe is not expanding or contracting. It only seems that way to a flow passing along it. (I thought this was about thermal expansion, or expansion under stress.)
And by friction, do you mean viscosity? Turbulence?
 
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haruspex said:
Friction of what on what?

Edit: having seen your next thread, I realize the pipe is not expanding or contracting. It only seems that way to a flow passing along it. (I thought this was about thermal expansion, or expansion under stress.)
And by friction, do you mean viscosity? Turbulence?
friction loss in pipe due to sudden expansion and contraction
 

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