Friction Factor Calculator by Mood Diagram
This friction factor calculator acts like an on-line Moody diagram.
One of the advantages of this program over the Moody diagram is that
graphical interpolations are not needed; each friction factor is
computed directly from the generating formula due to Colebrook (J. Inst.
Civ. Eng. Lond., v.11, 1938-1939, pp.133-156).
In the calculator below, the Reynolds number, pipe roughness, and friction factor are denoted by Re, e, and f respectively. I've recently upgraded this
calculator to include an output for the pressure drop per length of pipe.
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