Push fluid through a pipe and friction bleeds away pressure. Dial the diameter, flow, and roughness to see the pressure drop and whether the flow is laminar or turbulent.
Pipe Flow & Head LossLive
Darcy–Weisbach friction
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Friction turns pressure into heat as fluid moves through a pipe. Head loss h_f = f·(L/D)·v²/2g, where the friction factor f depends on the Reynolds number and pipe roughness. Educational tool.
Reading this result: Fully turbulent in a relatively smooth pipe: friction factor depends weakly on Reynolds number, and head loss grows roughly with the square of flow rate.
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How it works
The Darcy–Weisbach equation gives head loss h_f = f·(L/D)·v²/2g. The friction factor f comes from 64/Re in laminar flow, or a Colebrook-type correlation in turbulent flow that blends Reynolds number and relative roughness. Educational tool.
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The solver uses established numerical methods, but results are for research and educational purposes and should be validated against experiment or professional review before you rely on them.