Functions for basic hydraulic calculations related to
water flow in circular pipes flowing full (under pressure). This
includes friction loss calculations by solving the Darcy-Weisbach
equation for head loss, flow or diameter, and plotting a Moody diagram.
The Darcy-Weisbach friction factor is calculated using the Colebrook (or
Colebrook-White equation), the basis of the Moody diagram, the original
citation being Colebrook (1939)