Pipes Water Flow Velocity Head

Overview

Engineering reference data for Pipes Water Flow Velocity Head in fluid mechanics.

Key Formulas

Reynolds Number

$Re = \frac{\rho v D}{\mu}$

Ratio of inertial to viscous forces — determines flow regime.

Bernoulli's Equation

$P + \frac{1}{2}\rho v^2 + \rho g h = \text{const}$

Conservation of energy for steady, inviscid, incompressible flow.

Continuity Equation

$A_1 v_1 = A_2 v_2$

Conservation of mass for incompressible flow.

Darcy-Weisbach

$\Delta P = f \frac{L}{D} \frac{\rho v^2}{2}$

Pressure drop due to friction in a pipe.

Variables

Velocity Head Data for Schedule 40 Steel Pipes

The velocity head ($v^2/2g$) is used to calculate minor losses in piping systems. These tables provide velocity head values for water flow in Schedule 40 steel pipes of various diameters.

Note: 1 ft (foot) = 0.3048 m. Major and minor losses must be summed to calculate total head loss in a system.

Interactive Charts

References

• Original Source