Bernoulli - Head Balance

Contents

Total-head balance between two points in an incompressible flow - the classical Bernoulli equation for pump/pipe calculations.

Formula

$$ \frac{p_1}{\rho g} + \frac{v_1^2}{2g} + z_1 = \frac{p_2}{\rho g} + \frac{v_2^2}{2g} + z_2 + h_f $$

Symbol	Meaning	Unit	Source
$p, v, z$	Pressure, velocity, elevation	Pa, m/s, m	system points
$h_f$	Friction loss between 1 → 2	m	Darcy-Weisbach