Tests for a proposed friction-factor equation have shown it to be accurate for calculating pressure loss in turbulent flow for a non-Newtonian fluid.

A new equation for accurate approximation of the Moody friction factor in the general gas-flow equation better approximates a wide range of Reynolds numbers than previously published equations.

Colebrook–White Equation: An implicit relation widely used to calculate turbulent flow friction factors, which typically requires iterative methods for its solution.