Colebrook-White Friction Factor

Iterate Colebrook-White and compare Swamee-Jain and Haaland f

Inputs

Iterate the Colebrook-White equation and compare explicit Swamee-Jain and Haaland approximations.

Diameter D

Absolute roughness ε

Steel ≈ 4.5e-5 m, PVC ≈ 1.5e-6 m

Velocity V

m/s

Kinematic viscosity ν

m²/s

Water 20°C ≈ 1e-6

Graphical friction factor

Apply f to head loss

ν and roughness ε