frictionfactor

Sick of squinting at the Moody diagram? Use this function instead to compute your friction factor (Fluid Mechanics pipe flow analysis).

Takes the following inputs:
e (roughness)
d (pipe diameter)
rho (density)
mu (viscosity)
vave (average velocity)
uid (indicates whether using English or metric)

And outputs:
friction factor
relative roughness
alpha (for turbulent or laminar)
Reynold's number

Inputs may be in either English or metric. Uses the Colebrook function for iteration.