Fluid flow and elevation vs pressure

AI Thread Summary
The discussion centers on the relationship between elevation change and pressure loss in pipes, specifically addressing hydrostatic pressure and head loss due to flow restrictions. A user seeks supporting research for their experimental data showing a negative gradient graph related to pressure changes in a hydraulic system involving both horizontal and vertical pipes. Responses clarify that the scenario likely involves hydrostatic pressure and provide relevant equations and resources for further understanding. The conversation emphasizes the fundamental nature of the principles involved, suggesting that the user may not need extensive additional research. Overall, the thread highlights the importance of understanding basic hydraulic concepts in analyzing fluid flow and pressure dynamics.
lifeisstrange444
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Hey guys! does anyone have a graph of the relationship between elevation change and pressure loss in pipes? I currently have experimental data of a negative gradient graph. know it's theoretically correct however, I just need supporting research for this - have tried finding everywhere but can't find it
 
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Welcome to PF.

There are many interpretations of your question. I wonder what you mean.
Are you referring to hydrostatic pressure reduction, or a head loss due to flow restriction?

Please describe the hydraulic system, and attach the "negative gradient graph" to your next post.
 
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Hi, a change in pipe elevation. My setup is currently; horizontal pipe into vertical pipe and from the vertical pipe into another horizontal pipe. The last pipe is in partial flow and so im assuming the pressure is atmospheric pressure. I am then backtracking to find P1 (original pressure) - and finding the change in pressure due to the elevation. Attached is my graph - would really appreciate your help, thank you
Screenshot 2024-01-06 at 3.16.47 PM.png
 
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That appears to be hydrostatic pressure. The equation is here.
https://en.wikipedia.org/wiki/Vertical_pressure_variation

Your coefficient 9961.4 should be close to g * density.
For g = 9.8 m/s2 the liquid is water, with a density of 1016 kg/m3.

What "supporting research" do you require for something so fundamental ?
 
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