One of the parameters involved in the design of pressurized hydraulic systems is the
pressure drop in the pipes. The verification of the pressure drop can be performed through …

The Colebrook equation is a popular model for estimating friction loss coefficients in water
and gas pipes. The model is implicit in the unknown flow friction factor, f. To date, the …

This paper provides a new unified formula for Newtonian fluids valid for all pipe flow regimes
from laminar to fully rough turbulent flow. This includes laminar flow; the unstable sharp …

This paper presents evolutionary optimization of explicit approximations of the empirical
Colebrook's equation that is used for the calculation of the turbulent friction factor (λ), ie, for …

The empirical Colebrook equation from 1939 is still accepted as an informal standard way to
calculate the friction factor of turbulent flows (4000< Re< 108) through pipes with roughness …

Nowadays, the Colebrook equation is used as a mostly accepted relation for the calculation
of fluid flow friction factor. However, the Colebrook equation is implicit with respect to the …

Determination of friction factor (f) in pipe flow is necessary for various applications dealing
with fluid flow. The Colebrook–White equation is the most accepted technique for the f …

This article presents an empirical relation between Darcy-Weisbach and Hazen-Williams
equations, for cold and hot water flows through plastic pipes. Corresponding to water …

La caída de presión en las tuberías se calcula mediante la fórmula Darcy-Weisbach. Para
utilizar esta fórmula, debe conocerse el coeficiente de fricción hidráulica de Darcy. La mejor …

Empirical Colebrook equation implicit in unknown flow friction factor (λ) is an accepted
standard for calculation of hydraulic resistance in hydraulically smooth and rough pipes. The …