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. Other, ...

Accurate prediction of pressure loss in turbulent pipe flow is essential to the design and operation of pipelines across water, oil and gas, and industrial processing systems. Central to this task is ...

has long been used for calculating the friction factor, f, for incompressible and some compressible flows in uniform pipes, ducts, and conduits. It is asymptotic to both the accepted smooth-surface ...