3.2.18 round_friction - Round friction factor

f = round_friction(d,e,re)

Calculate the Chen approximation of the Colebrook-White equation.

The name of the function has been set to round_friction as to not name collide with rounding functions.

Arguments

d

Pipe internal diameter ().

e

Pipe effective roughness .

re

Reynolds number

Returns Darcy friction factor , dimensionless.