This web application calculates pressure drop in a straight pipe due to flow of a single phase incompressible fluid based on Darcy - Weisbach equation. Friction factor is calculated by solving Colebrook - White equation.

Pipe Data

mm
mm

Fluid Data

Kg/h
Kg/m³
cP

Result

Darcy's friction factor, f

Darcy's friction factor is calculated by iteratively solving Colebrook-White equation.

\displaystyle \displaystyle \frac{1}{\sqrt{f}}=-2log_{10}\left(\frac{\epsilon}{3.7D}+\frac{2.51}{Re\sqrt{f}}\right)

Darcy-Weisbach equation

Pressure drop (ΔP) in a pipe is calculated using Darcy - Weisbach equation.

\displaystyle \displaystyle \triangle P = f\frac{L}{D}\frac{\rho V^{2}}{2}