Friction losses due to expansion vs losses due to contract

AI Thread Summary
Friction losses in pipes during sudden expansion are generally higher than during contraction due to increased turbulence and flow separation. When fluid flows through an expanding section, it experiences a drop in pressure and increased velocity, leading to greater energy losses. In contrast, contraction tends to maintain more streamlined flow, resulting in lower friction losses. The discussion clarifies that these losses are related to the dynamics of fluid flow rather than physical changes in the pipe itself. Understanding these principles is crucial for effective fluid system design.
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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