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Derivation of Swamee Jain equation

Derivation of Swamee Jain equation

Derivation of Swamee Jain equation

(OP)
Hey everyone, Im doing some work on valve flow coefficients and at the moment am writing a report of my research/calculations. I'm writing about the friction factor and was wondering where the Swamee Jain Equation comes from? is there a derivation of it, if so does anyone know where I can find it or what starting equations I can use to derive it?

Ft = 1/4 (log(e/3.7d)+(5.74/Re^0.9))^-2

Thanks

RE: Derivation of Swamee Jain equation

It comes from Swamee, P. K., and Jain, A. K. (1976). "Explicit equations for pipe-flow problems." J. Hydraulics Division, ASCE, 102(5), 657-664.

Good luck,
Latexman

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